CVE-2026-86073High· 7.6▾ Twilightn8n 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 on…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 9.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
7.6 → 5.9
high → medium
5.9 → 7.6
medium → high
7.6 → 5.9
high → medium
5.9 → 7.6
medium → high
7.6 → 5.9
high → medium
5.9 → 7.6
medium → high
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.
n8n < 2.37.7n8n = 2.38.0Upgrade past the affected range:
n8n 2.37.7Affected packages:
n8n >= 2.38.0, < 2.38.1n8n < 2.37.7Patched in:
n8n 2.38.1n8n 2.37.7Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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