CVE-2026-112265
MEDIUM
CVSS 6.5
Published: 2026-10-19
Modified: 2026-10-19
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Threat Intelligence Pending
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Description
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.
Quick Facts
| CVE ID | CVE-2026-112265 |
| CVSS Score | 6.5 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N |
| Published | 2026-10-19 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/langbot-app/LangBot/blob/v4.11.0/src/lang…
- https://github.com/langbot-app/LangBot/blob/v4.11.0/src/lang…
- https://github.com/langbot-app/LangBot/blob/v4.11.0/src/lang…
- https://github.com/langbot-app/LangBot/commit/43c481d74a6388…
- https://github.com/langbot-app/LangBot/issues/2627
- https://www.vulncheck.com/advisories/langbot-through-4.11.0-…