Improper Neutralization of Null Byte or NUL Character Affecting botan3 package, versions <3.13.0+dfsg-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-BOTAN3-22107216
- published1 Nov 2026
- disclosed29 Oct 2026
Introduced: 29 Oct 2026
NewCVE-2026-118767 (opens in a new tab)How to fix?
Upgrade Debian:unstable botan3 to version 3.13.0+dfsg-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream botan3 package and not the botan3 package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.