4.8
Medium
CVE-2026-118767 Botan is a C++ cryptography library
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Botan 1.11 | 1.11.22 → < 3.13.0 | 3.13.0 |
Other CVEs of Botan
The 17 CVEs of Botan →
CVE-2026-104267
Botan: scrypt V-buffer heap overflow on 32-bit from constructor-accepted parameters
4.1
Medium
CVE-2026-48057
Botan: directoryName nameConstraint bypass via multi-AVA RDN flattening in matches_dn
2.1
Low
CVE-2026-118769
Botan is a C++ cryptography library
9.2
Critical
CVE-2026-118768
Botan is a C++ cryptography library
5.9
Medium