CVE-2026-126382
n8n before 2.38.0 Authentication Bypass via Asana Trigger Webhook Secret Reset
n8n before 2.38.0 and 3.x before 3.0.1 contains a missing authentication vulnerability in the Asana Trigger that accepts a new webhook verification secret from any request carrying an X-Hook-Secret header. Unauthenticated attackers who know the webhook URL can replace the secret, send forged Asana events that pass signature verification, and trigger workflows with attacker-controlled data while genuine deliveries are rejected.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| n8n n8n-io n8n
npm |
≥ 0; < 2.38.0 (affected, semver) 2.38.0 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| n8n n8n-io n8n
npm |
≥ 3.0.0; < 3.0.1 (affected, semver) 3.0.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:N | CNA: VulnCheck |
| 3.1 / 5.4 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-mx4r-96jx-v278CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/n8n-before-2.38.0-authentication-bypass-via-asana-trigger-webhook-secret-resetCNA: VulnCheck · third-party-advisory
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