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.
9 results
Oct 5, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-105768 · Other software · chainguard-dev · reported by 82cea9a6-e9e3-46fe-bdb0-3673de380178Medium 6.3
apko allows users to build and publish OCI container images built from apk packages. From version 0.2.0 to before version 1.4.5, UserEntry.Parse and GroupEntry.Parse in pkg/passwd read the UID and GID fields of /etc/passwd and /etc/group entries with strconv.Atoi and convert them to uint32 without a range check. On 64-bit platforms an out-of-range value such as 4294967296 (2^32) is truncated to 0, and negative values wrap. Because apko parses the passwd and group entries supplied by the packages it installs and writes them back into the image, an attacker who controls a package installed into the image can ship an entry that appears to declare an unprivileged UID or GID but is written into the built image as UID 0 or GID 0 (root). The truncated UID is also used when resolving the image's run-as user. This issue has been fixed in version 1.4.5.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 9, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-42576 · Other software · chainguard-dev · reported by GitHubMedium 6.5
apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as *rsa.PublicKey without checking the key type. If a repository JWKS endpoint returns a non-RSA key (e.g. EC), the unchecked assertion panics and crashes apko. This affects any workflow that initializes the APK database and fetches repository keys. This issue has been patched in version 1.2.7.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 9, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-42575 · Other software · chainguard-dev · reported by GitHubHigh 7.5
apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, apko verifies the signature on APKINDEX.tar.gz but never compares individually downloaded .apk packages against the checksum recorded in the signed index. The checksum is parsed and available via ChecksumString(), and the downloaded package control hash is computed, but the two values are never compared in getPackageImpl(). Mismatched packages are silently accepted. An attacker who can substitute download responses (compromised mirror, HTTP repository, poisoned CDN cache) can install arbitrary packages into built images. This issue has been patched in version 1.2.7.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 9, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-42574 · Other software · chainguard-dev · reported by GitHubHigh 7.5
apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before version 1.2.5, a crafted .apk could install a TypeSymlink tar entry whose target pointed outside the build root, and a subsequent directory-creation or file-write entry in the same or later archive could traverse that symlink to reach host paths the build user could write to. This issue has been patched in version 1.2.5.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 4, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-25140 · Other software · chainguard-dev · reported by GitHubHigh 7.5
apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, an attacker who controls or compromises an APK repository used by apko could cause resource exhaustion on the build host. The ExpandApk function in pkg/apk/expandapk/expandapk.go expands .apk streams without enforcing decompression limits, allowing a malicious repository to serve a small, highly-compressed .apk that inflates into a large tar stream, consuming excessive disk space and CPU time, causing build failures or denial of service. This issue has been patched in version 1.1.1.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 4, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-25122 · Other software · chainguard-dev · reported by GitHubMedium 5.5
apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.0, expandapk.Split drains the first gzip stream of an APK archive via io.Copy(io.Discard, gzi) without explicit bounds. With an attacker-controlled input stream, this can force large gzip inflation work and lead to resource exhaustion (availability impact). The Split function reads the first tar header, then drains the remainder of the gzip stream by reading from the gzip reader directly without any maximum uncompressed byte limit or inflate-ratio cap. A caller that parses attacker-controlled APK streams may be forced to spend excessive CPU time inflating gzip data, leading to timeouts or process slowdown. This issue has been patched in version 1.1.0.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 4, 2026apko allows users to build and publish OCI container images built from apk packages.CVE-2026-25121 · Other software · chainguard-dev · reported by GitHubHigh 7.5
apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, a path traversal vulnerability was discovered in apko's dirFS filesystem abstraction. An attacker who can supply a malicious APK package (e.g., via a compromised or typosquatted repository) could create directories or symlinks outside the intended installation root. The MkdirAll, Mkdir, and Symlink methods in pkg/apk/fs/rwosfs.go use filepath.Join() without validating that the resulting path stays within the base directory. This issue has been patched in version 1.1.1.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 18, 2025apko allows users to build and publish OCI container images built from apk packages.CVE-2025-53945 · Other software · chainguard-dev · reported by GitHubHigh 7
apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 3, 2024apko is an apk-based OCI image builder.CVE-2024-36127 · Other software · chainguard-dev · reported by GitHubHigh 7.5
apko is an apk-based OCI image builder. apko exposures HTTP basic auth credentials from repository and keyring URLs in log output. This vulnerability is fixed in v0.14.5.
- Product
- apko
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
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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