CVE-2026-93868
Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-338 |
| Vendor | cotonti |
| Product | cotonti |
| Published | Sep 18, 2026 |
| Last Updated | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Cotonti / Cotonti
0 ≤ 1.0.0
References
github.com: https://github.com/Cotonti/Cotonti/issues/1890 github.com: https://github.com/Cotonti/Cotonti/pull/1898 github.com: https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php github.com: https://github.com/Cotonti/Cotonti vulncheck.com: https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng
Credits
🔍 Harsh Raj Singhania