CVE-2026-118374

MediumCVSS 5.9/10Last modified Nov 2, 2026

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

Vendor	Product	Versions
OpenBSD	LibreSSL	<= 4.4.0

References

Timeline

Published: Oct 28, 2026
Last modified: Nov 2, 2026
NVD status: Deferred

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