Description
Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0.
Published: 2026-10-29
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Thu, 29 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Randombit
Randombit botan
Vendors & Products Randombit
Randombit botan

Thu, 29 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Description Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0.
Title Botan: CLI utility `ocsp_check` accepts unauthenticated responses
Weaknesses CWE-347
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-29T17:20:05.577Z

Reserved: 2026-10-28T19:20:05.017Z

Link: CVE-2026-118768

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-29T18:17:28.997

Modified: 2026-10-29T18:17:28.997

Link: CVE-2026-118768

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T19:30:15Z

Weaknesses