CVE-2026-93868

critical · 9.2

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.

9.2

CVSS

—

EPSS (exploit prob.)

—

EPSS percentile

2026-09-18

Published

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

Weaknesses

CWE-338

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-93868