CVE-2026-86077
Last modified
CVE-2026-86077 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /chat WebSocket route accepted a resumeToken and resumed a paused execution without checking that the target node supported chat messages. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /chat WebSocket route accepted a resumeToken and resumed a paused execution without checking that the target node supported chat messages. An anonymous form submitter who received that token could reuse it on the chat route to release a Send-and-Wait, non-chat HITL, or Wait approval gate. The affected authorization logic is packages/cli/src/chat/chat-execution-manager.ts, where canResumeOverChat did not gate the resume target. This issue is fixed in versions 2.37.7 and 2.38.2.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| N8n | N8n | < 2.37.7 |
| N8n | N8n | >= 2.38.0, < 2.38.2 |
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-35jj-42hp-8gmqMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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