CVE-2026-90562 LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key
Remote attackers can brute-force weak password recovery keys to reset the administrator password and gain unauthorized access to the LangBot platform.
- 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-2026-90562?
CVE-2026-90562 is a critical authentication bypass vulnerability in langbot-app LangBot, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and gain account access.
Weakness: CWE-331
Which versions are affected by CVE-2026-90562?
How do I fix CVE-2026-90562?
No fix has been published for CVE-2026-90562 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-90562 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90562 exists.
Sources
Also known as GHSA-6h2j-ghfm-664v.