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.
5 results
Oct 22, 2026In lsquic before 4.9.0, the HTTP/3 implementation can use an excessive amount of memory because the number of buffered header sets is not limited, as demonstratCVE-2026-115482 · Other software · litespeedtech · reported by MITREHigh 7.5
In lsquic before 4.9.0, the HTTP/3 implementation can use an excessive amount of memory because the number of buffered header sets is not limited, as demonstrated by a QPACK amplification attack. This is related to header_out_dynamic_entry and es_max_header_list_size.
- Product
- lsquic
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 1, 2025LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.CVE-2025-54939 · Other software · litespeedtech · reported by MITREMedium 5.3
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
- Product
- LSQUIC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordblog.litespeedtech.comgithub.com
Feb 19, 2025A hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpeed QUIC) before 4.2.0 allows remote attackers to cause a conCVE-2025-24947 · Other software · litespeedtech · reported by MITREMedium 5.3
A hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpeed QUIC) before 4.2.0 allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This is caused by XXH32 usage.
- Product
- LSQUIC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 9, 2024In LiteSpeed QUIC (LSQUIC) Library before 4.0.4, DCID validation is mishandled.CVE-2024-25678 · Other software · Litespeedtech · reported by MITRECritical 9.8
In LiteSpeed QUIC (LSQUIC) Library before 4.0.4, DCID validation is mishandled.
- Product
- Lsquic
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 11, 2022liblsquic/lsquic_qenc_hdl.c in LiteSpeed QUIC (aka LSQUIC) before 3.1.0 mishandles MAX_TABLE_CAPACITY.CVE-2022-30592 · Other software · Litespeedtech · reported by MITRECritical 9.8
liblsquic/lsquic_qenc_hdl.c in LiteSpeed QUIC (aka LSQUIC) before 3.1.0 mishandles MAX_TABLE_CAPACITY.
- Product
- Lsquic
- 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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