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VULNERABILITIES

CVE-2026-118767 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/randombit/botan/commit/5a4ac737e72e18a08eca848049e3dd38571c73b4 [email protected]
https://github.com/randombit/botan/pull/5814 [email protected]
https://github.com/randombit/botan/security/advisories/GHSA-w8gj-5xrm-gvrp [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-158Improper Neutralization of Null Byte or NUL Character[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-118767
NVD Published Date:
Oct 29, 2026
NVD Last Modified:
Oct 30, 2026
Source:
[email protected]
CVE-2026-118767 Details - Not Deferred