Medium severity6.5NVD Advisory· Published Oct 19, 2026· Updated Oct 19, 2026
CVE-2026-112265
CVE-2026-112265
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/langbot-app/LangBot/blob/v4.11.0/src/langbot/pkg/api/http/controller/groups/webhooks.pynvd
- github.com/langbot-app/LangBot/blob/v4.11.0/src/langbot/pkg/platform/adapters/lark/adapter.pynvd
- github.com/langbot-app/LangBot/blob/v4.11.0/src/langbot/pkg/platform/sources/lark.pynvd
- github.com/langbot-app/LangBot/commit/43c481d74a6388657b84baa7d292c613c75c24f9nvd
- github.com/langbot-app/LangBot/issues/2627nvd
- www.vulncheck.com/advisories/langbot-through-4.11.0-missing-lark-feishu-webhook-authenticity-verificationnvd
News mentions
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