CVE-2026-118373
Low · 3.7CVSS
3.7
EPSS
0.1%
Published
Oct 28, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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