CVE-2026-118766

6.1 MEDIUM 0.1% exploit odds Fix listed Disclosure Library

What it is

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.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. Limited direct impact.
Exploit odds: 0.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-10-28 19:20 UTC ReservedThe CVE id was reserved by its CNA
2026-10-29 18:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-04 02:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.1% in the next 30 days (EPSS).
Severity: 6.1 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-10-29 18:17 UTC
Last modified: 2026-11-04 02:17 UTC
Exploit probability: 0.1% · EPSS, next 30 days
Weakness: CWE-918 · Server-side request forgery
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 6.1

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Changed
Confidentiality: None
Integrity: Low
Availability: Low

Raw vector

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

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record