by Kastro
Paper/Archive/CVE-2026-93868

CVE-2026-93868

Cotonti Cotonti — Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG

EPSS 0.7%public exploitCVSS 9.2
critical.is priorityof 100
49
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 54.4.544 × 2010.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Cotonti≤ 1.0.0–CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/Cotonti/Cotonti/issues/1890patchgithub.com/Cotonti/Cotonti/pull/1898writeupgithub.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.phprefgithub.com/Cotonti/Cotontiwriteupvulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng