CVE-2026-118374

5.9 MEDIUMpublic exploit available

Published 2026-10-28 · Updated 2026-10-28

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

LibreSSL ocspcheck through 4.4.0 contains a memory exhaustion vulnerability that allows malicious OCSP responders to exhaust memory by sending unbounded HTTP responses. Attackers controlling the responder or intercepting plain HTTP AIA OCSP traffic can stream endless headers or body data to http_head_read() and http_body_read(), denying certificate status checks.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-770

Public exploit & PoC references

https://github.com/libressl/portable
https://github.com/openbsd/src/blob/f6f428241d469cf434e60b73fc834d0448f068d5/usr.sbin/ocspcheck/http.c#L419
https://github.com/openbsd/src/commit/bf5da63f53179ef423d18c56d6da89eaefb56228
https://github.com/openbsd/src/commit/de4274c56c9ace88232591d4c919d79281a8de59

All references

https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-4.4.0-relnotes.txt
https://github.com/libressl/portable
https://github.com/openbsd/src/blob/f6f428241d469cf434e60b73fc834d0448f068d5/usr.sbin/ocspcheck/http.c#L419
https://github.com/openbsd/src/commit/bf5da63f53179ef423d18c56d6da89eaefb56228
https://github.com/openbsd/src/commit/de4274c56c9ace88232591d4c919d79281a8de59
https://www.vulncheck.com/advisories/libressl-ocspcheck-through-4.4.0-memory-exhaustion-via-unbounded-ocsp-http-response

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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