CVE-2026-93868 Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG
Unauthenticated attackers can predict password recovery tokens to reset any user's password, including administrators, due to weak random number generation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93868?
CVE-2026-93868 is a critical vulnerability in Cotonti, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-338
Which versions are affected by CVE-2026-93868?
How do I fix CVE-2026-93868?
No fix has been published for CVE-2026-93868 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-93868 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93868 exists.
Sources
Also known as GHSA-rw92-cwm5-wp25.