Is there a public exploit for CVE-2026-118766?

No public exploit for CVE-2026-118766 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-118766?

CVE-2026-118766 scores CVSS 6.1 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.1%.

What does CVE-2026-118766 affect?

CVE-2026-118766 affects Randombit Botan.

6.1 Medium

Botan is a C++ cryptography library.

CVE-2026-118766

Botan is a C++ cryptography library. Prior to 3.13.0, Botan's online OCSP client allowed a single HTTP redirect while posting an OCSP request to the URI in a certificate's Authority Information Access extension. A malicious OCSP responder or an on-path attacker could redirect the client to make one blind request to an otherwise unreachable internal HTTP service. The primary impact is blind SSRF that might affect internal services with non-idempotent GET handlers, and response timing can provide a coarse internal-service oracle. This issue is fixed in version 3.13.0.

Assessment

CVSS: 6.1 (v3.1)
Severity: Medium
EPSS: 0.1% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 29 October 2026
Last updated: 4 November 2026
Affected: Randombit · Botan
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

At the source

EUVD (ENISA)

References

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