CVE-2026-118372 (GCVE-0-2026-118372)

Vulnerability from cvelistv5 – Published: 2026-10-28 02:03 – Updated: 2026-10-28 16:11
VLAI
Title
LibreSSL ocspcheck through 4.4.0 CRLF Injection via AIA OCSP URL Path
Summary
LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by embedding CR/LF sequences in a certificate's AIA OCSP URI path. Because url2host() copies the path without rejecting control characters and http_open() places it in the POST request line, attackers can inject headers or split OCSP requests sent to the responder host.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-28 14:35 UTC
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7156 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
2026-10-19 00:00
Credits
Aziz Elbelaychy (Ostorlab) Kenjiro Nakayama
Show details on NVD website
To clipboard 

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