CVE-2026-90562

CVSS 9.2 (critical) · published 2026-09-13

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

Source: NVD CVE-2026-90562

References

• https://github.com/langbot-app/LangBot
• https://github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/api/http/controller/groups/user.py
• https://github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/core/stages/genkeys.py
• https://github.com/langbot-app/LangBot/commit/267232c24f93c515d6fd3f7f81c0676066ab1ab8
• https://github.com/langbot-app/LangBot/issues/2392
• https://www.vulncheck.com/advisories/langbot-before-4.10.11-authentication-bypass-via-weak-recovery-key
• https://github.com/langbot-app/LangBot/issues/2392

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