7.6
CVE-2026-86073
- EPSS 0.32%
- Veröffentlicht 08.09.2026 17:01:24
- Zuletzt bearbeitet 11.09.2026 18:07:39
- Erkennungen
Loginn8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution
n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.1, the OAuth token endpoint bound an authorization code's first access token to the consented resource but did not bind its refresh token. Refreshing checked only that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could substitute a different workflow URL in the resource parameter and obtain a valid token for an unapproved workflow accessible to the consenting user. This issue is fixed in versions 2.37.7 and 2.38.1.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.32% | 0.248 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 7.6 | 2.8 | 4.7 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
|
| security-advisories@github.com | 5.9 | 0 | 0 |
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
CWE-863 Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
https://github.com/n8n-io/n8n/security/advisories/GHSA-cw9w-vv67-hf73
https://github.com/n8n-io/n8n/pull/37122
https://github.com/n8n-io/n8n/pull/37588
https://github.com/n8n-io/n8n/commit/18458482861097a26f874f30ad7e8136e268475c
https://github.com/n8n-io/n8n/commit/380788fd9a3264c83161e868026a98731d274d88
https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7
https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.1