CVE-2026-110841

medium

Description

n8n before 2.41.4 and 2.42.0 contains an authorization bypass in the agent chat resume endpoint, which accepts a run identifier from the request body without verifying that the suspended checkpoint belongs to the caller. Authenticated project members can list and read other members' private agent conversations through project-scoped endpoints, then approve their pending tool calls, causing the tools to execute and write results into the victim's conversation.

References

https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.0-authorization-bypass-in-agent-chat-resume-tool-approval

https://github.com/n8n-io/n8n/security/advisories/GHSA-p3pg-xw4f-m72c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101724

Details

Source: Mitre, NVD

Published: 2026-10-14

Updated: 2026-10-20

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

CVSS v4

Base Score: 6.1

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:N

Severity: Medium

EPSS

EPSS: 0.00282