CVE-2026-118676

n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows member users to use credentials they cannot access by omitting default node parameters. Attackers can save and run workflows where pre-execution checks skip credential slots, causing decrypted credential values to be sent to attacker-chosen destinations.

Score

CVSS 3.1 7.1 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-28

Last modified

2026-10-28

Weaknesses

CWE-863

Affected products

• N8n (N8n)

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-v9cx-v88r-42vw
• https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-credential-permission-check-bypass