CVE-2026-93868CWE-338

CVE-2026-93868

High · published September 19, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
53.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.2 · 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
EPSS
0.00734 · 53.9th percentile
Weakness
CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Published
2026-09-19T00:17Z
References (6)
https://github.com/Cotonti/Cotonti · [email protected]https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php · [email protected]https://github.com/Cotonti/Cotonti/issues/1890 · [email protected]https://github.com/Cotonti/Cotonti/pull/1898 · [email protected]https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng · [email protected]https://github.com/Cotonti/Cotonti/issues/1890 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 20 SEP 03:25Z
    EPSS moved — → 1%
    epss
  • 18 SEP 19:56Z
    Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG
    cvelistv5