CVE-2026-118373

LowCVSS 3.7/10Last modified Nov 5, 2026

Description

LibreSSL ocspcheck through 4.4.0 contains a cleartext transmission vulnerability because url2host() discards the OCSP URL scheme and http_alloc() only selects TLS for port 443. On-path network attackers can read OCSP requests sent to https responder URLs on non-443 ports, exposing certificate serial numbers, issuer hashes, and nonces.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-319

Affected software

Vendor	Product	Versions
OpenBSD	LibreSSL	<= 4.4.0

References

Timeline

Published: Oct 28, 2026
Last modified: Nov 5, 2026
NVD status: Deferred

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