CVEvulnerability
CVE-2026-93868
9.2 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-09-18
- Last modified
- 2026-09-22
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.2 CRITICAL — CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-338
Description
Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.
Related
Weakness · CWE (1)
- CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) weakness
References
- https://github.com/Cotonti/Cotonti github.com
- https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php github.com
- https://github.com/Cotonti/Cotonti/issues/1890 github.com
- https://github.com/Cotonti/Cotonti/pull/1898 github.com
- https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng www.vulncheck.com
- https://github.com/Cotonti/Cotonti/issues/1890 github.com