CVE-2026-93868

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Cotonti/Cotonti
https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php
https://github.com/Cotonti/Cotonti/issues/1890
https://github.com/Cotonti/Cotonti/pull/1898
https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng
https://github.com/Cotonti/Cotonti/issues/1890

Configurations

No configuration.

History

18 Sep 2026, 21:18

Type	Values Removed	Values Added
References	~~() https://github.com/Cotonti/Cotonti/issues/1890 -~~	() https://github.com/Cotonti/Cotonti/issues/1890 -

18 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 20:17

Updated : 2026-09-22 20:53

NVD link : CVE-2026-93868

Mitre link : CVE-2026-93868

CVE.ORG link : CVE-2026-93868

JSON object : View

Products Affected

No product.

CWE

CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

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