CVE-2026-118373 (GCVE-0-2026-118373)

Vulnerability from cvelistv5 – Published: 2026-10-28 02:03 – Updated: 2026-10-28 02:03
VLAI
Title
LibreSSL ocspcheck through 4.4.0 Cleartext Transmission of OCSP Requests via url2host()
Summary
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.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-319 - Cleartext Transmission of Sensitive Information
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7011 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenBSD LibreSSL Affected: 0 , ≤ 4.4.0 (semver)
    cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-16 00:00
Credits
Aziz Elbelaychy (Ostorlab) Kenjiro Nakayama
Show details on NVD website
To clipboard 

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}



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