CVE-2026-54305
published 2026-06-23CVE-2026-54305: n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, three EE endpoints used by the Dynamic Credentials feature accepted…
PriorityP263critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAL
EPSS
0.37%
28.5th percentile
n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, three EE endpoints used by the Dynamic Credentials feature accepted any authenticated n8n session without performing per-resource ownership or scope checks on the target workflow or credential. An authenticated user with no project membership or credential sharing relationship could enumerate credential identifiers, names, and types referenced by any private workflow in the instance, initiate an OAuth authorization flow against another user's credential to overwrite its stored tokens with tokens bound to an account they control, or revoke another user's stored credential tokens entirely. Workflows relying on a hijacked credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of integrations. Token revocation would break affected workflows. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| n8n-io | n8n | < 1.123.55 | 1.123.55 |
| n8n-io | n8n | — | — |
| n8n-io | n8n | — | — |
| n8n | n8n | < 1.123.55 | 1.123.55 |
| n8n | n8n | >= 0 < 1.123.55 | 1.123.55 |
| n8n | n8n | >= 2.0.0 < 2.25.7 | 2.25.7 |
| n8n | n8n | >= 2.0.0-rc.0 < 2.25.7 | 2.25.7 |
| n8n | n8n | >= 2.26.0 < 2.26.2 | 2.26.2 |
| n8n | n8n | >= 2.26.0 < 2.26.2 | 2.26.2 |
Detection & IOCsextracted from sources · hover to see the quote
- →Target endpoints are EE Dynamic Credentials feature endpoints; look for authenticated requests to these endpoints from users with no project membership or credential sharing relationship — particularly OAuth authorization flow initiations or token revocation calls against credentials they do not own. ↗
- →Monitor for credential enumeration activity: authenticated users querying credential identifiers, names, and types belonging to workflows they have no membership in. ↗
- →Alert on OAuth authorization flows initiated against credentials owned by other users, especially where the initiating user has no sharing relationship with the target credential. ↗
- →Alert on credential token revocation events triggered by users who are not the credential owner and have no project/sharing relationship with the target credential. ↗
- →Investigate workflows that begin executing under a different OAuth identity than their owner's — this may indicate a hijacked credential being used for data exfiltration to attacker-controlled external services. ↗
- ·Vulnerability affects n8n versions prior to 1.123.55, 2.25.7, and 2.26.2; patch to one of these fixed versions to remediate. ↗
- ·CVE-2026-54305 is distinct from CVE-2026-59208 (a token-exchange identity-binding bug); ensure both are tracked separately as they affect different features. ↗
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
nvdv4.08.9HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/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
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VulDB
n8n-io n8n up to 1.123.54/2.25.6/2.26.1 Dynamic Credentials Feature information disclosure (GHSA-2j5h-858j-5mpf)
vuldb·2026-06-24·CVSS 8.9
CVE-2026-54305 [HIGH] n8n-io n8n up to 1.123.54/2.25.6/2.26.1 Dynamic Credentials Feature information disclosure (GHSA-2j5h-858j-5mpf)
A vulnerability classified as problematic has been found in n8n-io n8n up to 1.123.54/2.25.6/2.26.1. This impacts an unknown function of the component Dynamic Credentials Feature. The manipulation leads to information disclosure.
This vulnerability is referenced as CVE-2026-54305. Remote exploitation of the attack is possible. No exploit is available.
It is recommended to upgrade the affected component.
GHSA
n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
ghsa·2026-06-16
CVE-2026-54305 [HIGH] CWE-200 n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
## Impact
Three EE endpoints used by the Dynamic Credentials feature accepted any authenticated n8n session without performing per-resource ownership or scope checks on the target workflow or credential. An authenticated user with no project membership or credential sharing relationship could enumerate credential identifiers, names, and types referenced by any private workflow in the instance, initiate an OAuth authorization flow against another user's credential to overwrite its stored tokens with tokens bound to an account they control, or revoke another user's stored credential tokens entirely.
Workflows relying on a hijacked credential would subsequently execute under the attacker's OAuth identity, enabling da
No detection rules found.
No public exploits indexed.
Hackernews
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blogs_hackernews·2026-07-20·CVSS 5.9
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A single request should not be able to do this much. But this week, small inputs led to code execution, memory loss, stolen keys, and disabled security tools.
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Hackernews
n8n Token Exchange Flaw Could Let Attackers Log In as Users From Another Issuer
blogs_hackernews·2026-07-16·CVSS 9.9
CVE-2026-59208 [CRITICAL] n8n Token Exchange Flaw Could Let Attackers Log In as Users From Another Issuer
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## n8n Token Exchange Flaw Could Let Attackers Log In as Users From Another Issuer
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CVE-2026-59208
Strix says it pointed out that the agent at the token-exchange flow and found the identity-binding bug there.
## Two issuers, one account
Token exchange is n8n's Enterprise route for OEM partners who embed the product , an RFC 8693 implementation that spares their users a second login screen.
N8N_TOKEN_EXCHANGE_TRUSTED_KEYS
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iss
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n8n keyed on half of it. Nothing stops two issuers from emitting the same subject string, and when they do, both land on one n8n account.
## How big a deal is this
The fla
2026-06-23
Published