Vulnerability in Langbot-App Langbot
CVE-2026-90562
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (54.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/langbot-app/LangBot/issues/2392 (issue-tracking)
- github.com/langbot-app/LangBot (product)
- github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/core/stages/genkeys… (technical-description)
- github.com/langbot-app/LangBot/blob/v4.10.2/src/langbot/pkg/api/http/controller… (technical-description)
- github.com/langbot-app/LangBot/commit/267232c24f93c515d6fd3f7f81c0676066ab1ab8 (patch)
- www.vulncheck.com/advisories/langbot-before-4.10.11-authentication-bypass-via-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90562?
- CVE-2026-90562 is a high-severity vulnerability in Langbot-App Langbot, classified under Insufficient Entropy. CVSS score: 8.1/10. Published 2026-09-13.
- How severe is CVE-2026-90562?
- High severity. CVSS v3 base score is 8.1 out of 10.