PT-2026-117409 · Langbot App · Langbot
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N |
LangBot through 4.11.0 contains a missing authenticity verification vulnerability that allows unauthenticated attackers to inject forged Lark/Feishu events by skipping signature checks. Attackers knowing a bot UUID can POST fabricated im.message.receive v1 or card.action.trigger events to drive the LLM pipeline, tools, and approvals as other users.
Fix
Insufficient Verification of Data Authenticity
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Weakness Enumeration
Related Identifiers
Affected Products
Langbot