# libevent.

Every CVE that names libevent among its affected products, newest first. Vendors and products are as the CNA wrote them.

## Records, newest first

- [Libevent: HTTP header handling bugs create risk of access control bypass.](https://agentprime.io/advisories/CVE-2026-63385.md)
  `CVE-2026-63385` · CVE record: libevent libevent · CVSS 9.2 Critical · Critical (CVSS 9+) · Not analysed yet · Published 20 Aug 2026 · Tags: HTTP request smuggling
- [Libevent: HTTP Header smuggling](https://agentprime.io/advisories/CVE-2026-63379.md)
  `CVE-2026-63379` · CVE record: libevent libevent · CVSS 6.3 Medium · Not analysed yet · Published 20 Aug 2026 · Tags: HTTP request smuggling
- [Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response](https://agentprime.io/advisories/CVE-2026-63387.md)
  `CVE-2026-63387` · CVE record: libevent libevent · CVSS 7.0 High · Not analysed yet · Published 20 Aug 2026 · Tags: Memory corruption, CWE-193
- [Libevent: \`evtag_unmarshal_header()\` decodes a wire \`uint32\` length into a signed \`int\` return value.](https://agentprime.io/advisories/CVE-2026-63384.md)
  `CVE-2026-63384` · CVE record: libevent libevent · CVSS 8.7 High · Not analysed yet · Published 20 Aug 2026 · Tags: Memory corruption
- [Libevent: Null Pointer Dereference in \`evws_new_session\`](https://agentprime.io/advisories/CVE-2026-63380.md)
  `CVE-2026-63380` · CVE record: libevent libevent · CVSS 5.7 Medium · Not analysed yet · Published 20 Aug 2026 · Tags: Memory corruption
- [libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling](https://agentprime.io/advisories/CVE-2026-63382.md)
  `CVE-2026-63382` · CVE record: libevent libevent · CVSS 9.2 Critical · Critical (CVSS 9+) · Not analysed yet · Published 20 Aug 2026 · Tags: HTTP request smuggling
- [Libevent: Dangling Pointer in \`evbuffer_add_buffer_reference\`](https://agentprime.io/advisories/CVE-2026-63381.md)
  `CVE-2026-63381` · CVE record: libevent libevent · CVSS 5.8 Medium · Not analysed yet · Published 20 Aug 2026 · Tags: Memory corruption
- [Libevent: Unbounded memory accumulation in WebSocket server via fragmented frames](https://agentprime.io/advisories/CVE-2026-63495.md)
  `CVE-2026-63495` · CVE record: libevent libevent · CVSS 7.5 High · Not analysed yet · Published 20 Aug 2026 · Tags: Denial of service
- [Libevent: decode_tag_internal() can lead to out-of-bounds read](https://agentprime.io/advisories/CVE-2026-63383.md)
  `CVE-2026-63383` · CVE record: libevent libevent · CVSS 8.7 High · Not analysed yet · Published 20 Aug 2026 · Tags: Memory corruption
- [Libevent: Heap out-of-bounds write in bufferevent_socket_set_conn_address\_ reachable via AF_UNIX accept](https://agentprime.io/advisories/CVE-2026-63388.md)
  `CVE-2026-63388` · CVE record: libevent libevent · CVSS 8.4 High · Not analysed yet · Published 20 Aug 2026 · Tags: Denial of service, Memory corruption

## Filters and formats

Filters are query parameters on this URL: `q` (words, as in a web search engine: `"a phrase"`, `OR`, `-word`; an id; a package or product name), `severity` (low, medium, high or critical), `critical=1`, `kev=1`, `ecosystem` (npm, pypi, packagist, go, maven, rubygems, crates, nuget, hex), `kind=package`, `assigner` (a CNA’s short name), `min_score` and `state`. Each record’s title links to its Markdown page.

- The same list as JSON: <https://api.agentprime.io/v1/advisories?technology=libevent>
- Every list: <https://agentprime.io/advisories.md>, critical: <https://agentprime.io/advisories/critical.md>; by weakness: <https://agentprime.io/advisories/tag/sql-injection.md> and the other tags in <https://agentprime.io/llms.txt>; by technology: `/advisories/technology/<slug>.md` (`fortinet-fortimail`)

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The web page: <https://agentprime.io/advisories/technology/libevent/>. Everything for agents: <https://agentprime.io/llms.txt>.