CVE-2026-118767

MEDIUM

MEDIUM Priority: 0.00 BB Relevance: 60/100

Published: 2026-10-29 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network

AC: High

PR: None

UI: None

S: Unchanged

C: Low

I: Low

A: None

Description

Botan is a C++ cryptography library. From 1.11.22 until 3.13.0, Botan's Python binding converted Python strings containing U+0000 to const char* values without consistently rejecting the embedded NUL, causing bcrypt and check_bcrypt to process only the prefix before the NUL. Applications could validate a longer password but hash a shorter effective value, allowing application password-policy bypass; scrypt and argon2 are unaffected. This issue is fixed in version 3.13.0.