CVE-2026-118371

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 73/100
Published: 2026-10-28 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: Present
VC: None
VI: Low
VA: None

Description

LibreSSL through 4.4.0 contains a CRLF injection vulnerability in the libcrypto OCSP_sendreq_new() and OCSP_parse_url() functions, which write unvalidated request paths into the OCSP POST request line. Attackers can embed carriage return and line feed characters in a certificate's Authority Information Access OCSP URI to inject HTTP headers or split requests sent to responders and proxies.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
OpenBSD LibreSSL 0
OpenBSD LibreSSL 0

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.14%
Raw Score 0.001350
Percentile 3.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00135
2026-10-28
0.00135

Intelligence Sources

mitre ref →
nvd ref →