Vulnerability · Published Sep 18, 2026 · Assigned by VulnCheck

CVE-2026-93868Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG

High 8.1

In plain English

A high-severity security flaw in Cotonti from Cotonti. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.7%top 45.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Cotonti	Cotonti	0 – through 1.0.0

Weakness: CWE-338 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/Cotonti/Cotonti/issues/1890 issue-tracking
https://github.com/Cotonti/Cotonti/pull/1898 patch, issue-tracking
https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php technical-description
https://github.com/Cotonti/Cotonti product
VulnCheck Advisory: Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG third-party-advisory