Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
21 results
Aug 22, 2026In the Linux kernel, the following vulnerability has been resolved: veth: fix skb length accounting after XDP frag adjustment veth exposes non-linear skb fragCVE-2026-74612 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Critical 10
In the Linux kernel, the following vulnerability has been resolved: veth: fix skb length accounting after XDP frag adjustment veth exposes non-linear skb fragments through an xdp_buff. If an XDP program adjusts the fragment area, veth_xdp_rcv_skb() copies xdp_frags_size back to skb->data_len but leaves skb->len containing the old fragment contribution. After a fragment shrink, this makes skb_headlen() larger than the actual linear area. In the reproduced UDP receive path, __skb_datagram_iter() copied 1024 bytes past the actual linear tail to userspace, starting at struct skb_shared_info. The copied bytes included the affected skb's nr_frags, xdp_frags_size, and a kernel pointer from skb_shinfo(skb)->frags[0]. Real packet data was displaced by the same amount and truncated at the end. Subtract the old data_len before replacing it and add the new data_len afterwards, keeping skb->len and skb->data_len synchronized. Additionally, bpf_xdp_pull_data() can advance data_end while leaving frags present. The skb is then still non-linear, so the old __skb_put(skb, off) triggers SKB_LINEAR_ASSERT(). Use skb_set_tail_pointer() and update skb->len explicitly instead, following bpf_prog_ru
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
May 28, 2026In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virCVE-2026-46207 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtio_transport_build_skb() goes through virtio_transport_copy_nonlinear_skb() to copy the original payload in the new skb to be delivered to the vsockmon tap device. This manually initializes an iov_iter but does not set iov_iter.count. Since the iov_iter is zero-initialized, the copy length is zero and no payload is actually copied to the monitor interface, leaving data un-initialized. Fix this by removing the linear vs non-linear split and using skb_copy_datagram_iter() with iov_iter_kvec() for all cases, as vhost-vsock already does. This handles both linear and non-linear skbs, properly initializes the iov_iter, and removes the now unused virtio_transport_copy_nonlinear_skb(). While touching this code, let's also check the return value of skb_copy_datagram_iter(), even though it's unlikely to fail.
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Apr 22, 2026In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix skb_put() panic on non-linear skb during reassembly In iptfs_reassem_contCVE-2026-31517 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix skb_put() panic on non-linear skb during reassembly In iptfs_reassem_cont(), IP-TFS attempts to append data to the new inner packet 'newskb' that is being reassembled. First a zero-copy approach is tried if it succeeds then newskb becomes non-linear. When a subsequent fragment in the same datagram does not meet the fast-path conditions, a memory copy is performed. It calls skb_put() to append the data and as newskb is non-linear it triggers SKB_LINEAR_ASSERT check. Oops: invalid opcode: 0000 [#1] SMP NOPTI [...] RIP: 0010:skb_put+0x3c/0x40 [...] Call Trace: <IRQ> iptfs_reassem_cont+0x1ab/0x5e0 [xfrm_iptfs] iptfs_input_ordered+0x2af/0x380 [xfrm_iptfs] iptfs_input+0x122/0x3e0 [xfrm_iptfs] xfrm_input+0x91e/0x1a50 xfrm4_esp_rcv+0x3a/0x110 ip_protocol_deliver_rcu+0x1d7/0x1f0 ip_local_deliver_finish+0xbe/0x1e0 __netif_receive_skb_core.constprop.0+0xb56/0x1120 __netif_receive_skb_list_core+0x133/0x2b0 netif_receive_skb_list_internal+0x1ff/0x3f0 napi_complete_done+0x81/0x220 virtnet_poll+0x9d6/0x116e [virtio_net] __napi_poll.constprop.0+0x2b/0x270 net_rx_action+0x162/
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Dec 16, 2025In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ XDP programs caCVE-2025-40350 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Critical 9.8
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ XDP programs can change the layout of an xdp_buff through bpf_xdp_adjust_tail() and bpf_xdp_adjust_head(). Therefore, the driver cannot assume the size of the linear data area nor fragments. Fix the bug in mlx5 by generating skb according to xdp_buff after XDP programs run. Currently, when handling multi-buf XDP, the mlx5 driver assumes the layout of an xdp_buff to be unchanged. That is, the linear data area continues to be empty and fragments remain the same. This may cause the driver to generate erroneous skb or triggering a kernel warning. When an XDP program added linear data through bpf_xdp_adjust_head(), the linear data will be ignored as mlx5e_build_linear_skb() builds an skb without linear data and then pull data from fragments to fill the linear data area. When an XDP program has shrunk the non-linear data through bpf_xdp_adjust_tail(), the delta passed to __pskb_pull_tail() may exceed the actual nonlinear data size and trigger the BUG_ON in it. To fix the issue, first record the original number of fragments. If the number of fr
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Oct 29, 2025The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input.CVE-2025-61723 · Other software · Go standard library · reported by security@golang.orgHigh 7.5
The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs.
- Product
- encoding/pem
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2025Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate.CVE-2025-58187 · Other software · Go standard library · reported by security@golang.orgHigh 7.5
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
- Product
- crypto/x509
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 28, 2025In the Linux kernel, the following vulnerability has been resolved: smb: client: fix crypto buffers in non-linear memory The crypto API, through the scatterliCVE-2025-40052 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix crypto buffers in non-linear memory The crypto API, through the scatterlist API, expects input buffers to be in linear memory. We handle this with the cifs_sg_set_buf() helper that converts vmalloc'd memory to their corresponding pages. However, when we allocate our aead_request buffer (@creq in smb2ops.c::crypt_message()), we do so with kvzalloc(), which possibly puts aead_request->__ctx in vmalloc area. AEAD algorithm then uses ->__ctx for its private/internal data and operations, and uses sg_set_buf() for such data on a few places. This works fine as long as @creq falls into kmalloc zone (small requests) or vmalloc'd memory is still within linear range. Tasks' stacks are vmalloc'd by default (CONFIG_VMAP_STACK=y), so too many tasks will increment the base stacks' addresses to a point where virt_addr_valid(buf) will fail (BUG() in sg_set_buf()) when that happens. In practice: too many parallel reads and writes on an encrypted mount will trigger this bug. To fix this, always alloc @creq with kmalloc() instead. Also drop the @sensitive_size variable/arguments since kfree_sensitive() doesn'
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Dec 18, 2024An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing.CVE-2024-45338 · Other software · golang.org/x/net · reported by security@golang.orgMedium 5.3
An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.
- Product
- golang.org/x/net/html
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 25, 2024N-LINE 2.0.6 and prior versions contain a code injection vulnerability.CVE-2024-47158 · Other software · NEUMANN CO.LTD. · reported by vultures@jpcert.or.jpMedium 5.4
N-LINE 2.0.6 and prior versions contain a code injection vulnerability. If this vulnerability is exploited, arbitrary code may be executed on the instructor's browser, or the instructor may be directed to a malicious website.
- Product
- N-LINE
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 17, 2024In the Linux kernel, the following vulnerability has been resolved: ext4: fix corruption during on-line resize We observed a corruption during on-line resize CVE-2024-35807 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: ext4: fix corruption during on-line resize We observed a corruption during on-line resize of a file system that is larger than 16 TiB with 4k block size. With having more then 2^32 blocks resize_inode is turned off by default by mke2fs. The issue can be reproduced on a smaller file system for convenience by explicitly turning off resize_inode. An on-line resize across an 8 GiB boundary (the size of a meta block group in this setup) then leads to a corruption: dev=/dev/<some_dev> # should be >= 16 GiB mkdir -p /corruption /sbin/mke2fs -t ext4 -b 4096 -O ^resize_inode $dev $((2 * 2**21 - 2**15)) mount -t ext4 $dev /corruption dd if=/dev/zero bs=4096 of=/corruption/test count=$((2*2**21 - 4*2**15)) sha1sum /corruption/test # 79d2658b39dcfd77274e435b0934028adafaab11 /corruption/test /sbin/resize2fs $dev $((2*2**21)) # drop page cache to force reload the block from disk echo 1 > /proc/sys/vm/drop_caches sha1sum /corruption/test # 3c2abc63cbf1a94c9e6977e0fbd72cd832c4d5c3 /corruption/test 2^21 = 2^15*2^6 equals 8 GiB whereof 2^15 is the number of blocks per block group and 2^6 are the numb
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Jul 20, 2023 InfoDoc Document On-line Submission and Approval System lacks sufficient restrictions on the available tags within its HTML to PDF conversion function, and allCVE-2023-37290 · Other software · InfoDoc · reported by twcert@cert.org.twHigh 7.5
InfoDoc Document On-line Submission and Approval System lacks sufficient restrictions on the available tags within its HTML to PDF conversion function, and allowing an unauthenticated attackers to load remote or local resources through HTML tags such as iframe. This vulnerability allows unauthenticated remote attackers to perform Server-Side Request Forgery (SSRF) attacks, gaining unauthorized access to arbitrary system files and uncovering the internal network topology.
- Product
- Document On-line Submission and Approval System
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordtwcert.org.twtwcert.org.tw
Jul 19, 2023It is identified a vulnerability of Unrestricted Upload of File with Dangerous Type in the file uploading function in InfoDoc Document On-line Submission and ACVE-2023-37289 · Other software · InfoDoc · reported by twcert@cert.org.twCritical 9.8
It is identified a vulnerability of Unrestricted Upload of File with Dangerous Type in the file uploading function in InfoDoc Document On-line Submission and Approval System, which allows an unauthenticated remote attacker can exploit this vulnerability without logging system to upload and run arbitrary executable files to perform arbitrary system commands or disrupt service. This issue affects Document On-line Submission and Approval System: 22547, 22567.
- Product
- Document On-line Submission and Approval System
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordtwcert.org.twtwcert.org.tw
Aug 31, 2020Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earliCVE-2020-7522 · Other software · Schneider-electric · reported by cybersecurity@se.comCritical 9.8
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earlier) when accessing a vulnerable method of `SoundUploadServlet` which may lead to uploading executable files to non-specified directories.
- Product
- APC Easy UPS Online Software
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 31, 2020Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earliCVE-2020-7521 · Other software · Schneider-electric · reported by cybersecurity@se.comCritical 9.8
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earlier) when accessing a vulnerable method of `FileUploadServlet` which may lead to uploading executable files to non-specified directories.
- Product
- APC Easy UPS Online Software
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 8, 2020A Content-Security-Policy that blocks in-line scripts could be bypassed using an object tag to execute JavaScript in the protected document (cross-site scriptinCVE-2019-17001 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 6.1
A Content-Security-Policy that blocks in-line scripts could be bypassed using an object tag to execute JavaScript in the protected document (cross-site scripting). This is a separate bypass from CVE-2019-17000.*Note: This flaw only affected Firefox 69 and was not present in earlier versions.*. This vulnerability affects Firefox < 70.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Dec 20, 2007Cross-site scripting (XSS) vulnerability in the on-line help feature in Citrix Web Interface 2.0 and earlier, and NFuse, allows remote attackers to inject arbitCVE-2007-6477 · Network & remote access · Citrix · reported by MITREMedium 4.3
Cross-site scripting (XSS) vulnerability in the on-line help feature in Citrix Web Interface 2.0 and earlier, and NFuse, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
- Product
- Web Interface
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecunia.comsupport.citrix.com
Apr 10, 2007Session fixation vulnerability in onelook courts on-line allows remote attackers to hijack web sessions by setting a PHPSESSID cookie.CVE-2007-1953 · Other software · Onelook · reported by MITREHigh 7.5
Session fixation vulnerability in onelook courts on-line allows remote attackers to hijack web sessions by setting a PHPSESSID cookie.
- Product
- Courts Online
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmajorsecurity.desecurityfocus.com
Dec 31, 2002Cross-site scripting (XSS) vulnerability in the Quizz module for XOOPS 1.0, when allowing on-line question development, allows remote attackers to inject arbitrCVE-2002-2386 · Other software · Xoops · reported by MITREMedium 4.3
Cross-site scripting (XSS) vulnerability in the Quizz module for XOOPS 1.0, when allowing on-line question development, allows remote attackers to inject arbitrary web script or HTML via a javascript: URL in the SRC attribute of an IMG tag.
- Product
- Xoops
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comblocus-zone.com
Jun 27, 2001template.cgi in Free On-Line Dictionary of Computing (FOLDOC) allows remote attackers to read files and execute commands via shell metacharacters in the argumenCVE-2001-0461 · Other software · Denis Howe · reported by MITREHigh 7.5
template.cgi in Free On-Line Dictionary of Computing (FOLDOC) allows remote attackers to read files and execute commands via shell metacharacters in the argument to template.cgi.
- Product
- Foldoc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comwombat.doc.ic.ac.uk
May 3, 2000The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command.CVE-2000-0345 · Network & remote access · Cisco · reported by MITRELow 2.1
The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command.
- Product
- IOS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comsecurityfocus.com
Nov 9, 1999Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack whicCVE-1999-1111 · Other software · Immunix · reported by MITREHigh 7.5
Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.
- Product
- Stackguard
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmarc.infosecurityfocus.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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