How severe is CVE-2025-52554?

No CVSS score has been assigned to CVE-2025-52554 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-52554?

CVE-2025-52554 affects the following packages: n8n (npm). Ecosystems affected: npm.

How do I fix CVE-2025-52554?

Update n8n to 1.99.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-52554 is resolved across your whole dependency graph.

How do I detect CVE-2025-52554 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for n8n, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-52554 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is CVE-2025-52554 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-52554 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-52554?

CVE-2025-52554 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 31th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-52554?

CVE-2025-52554 is classified as CWE-862 (CWE-862). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2025-52554 published, and has it been updated?

CVE-2025-52554 was published on July 3, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2025-52554 — n8n

Fix: dudanogueira/n8n@ca2f90c

CVE-2025-52554 is a CWE-862 vulnerability in n8n. A fix is available for n8n — see the affected versions and patch details below.

n8n Improper Authorization in Workflow Execution Stop Endpoint Allows Terminating Other Users’ Workflows

Also known asGHSA-gq57-v332-7666

Published

Jul 3, 2025

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-52554.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk+0.03%

Lower risk than most CVEs31th percentile — riskier than 31% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

36other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

n8nnpm

160Kdownloads / week

Description

Summary

An authorization vulnerability was discovered in the /rest/executions/:id/stop endpoint of n8n. An authenticated user can stop workflow executions that they do not own or that have not been shared with them, leading to potential business disruption.

Impact

This is an improper authorization vulnerability. While most API methods enforce user-scoped access to workflow execution IDs, the /stop endpoint fails to do so. An attacker can guess or enumerate execution IDs (which are sequential and partially exposed via verbose error messages) and terminate active workflows initiated by other users.

Who is impacted:

Environments where multiple users with varying trust levels share access to the same n8n instance.
All users running long-running or time-sensitive workflows (e.g., using the wait node).

An attacker with authenticated access can exploit this flaw to:

Disrupt other users’ workflow executions.
Cause denial of service for business-critical automations.

Patches

The issue was addressed in https://github.com/n8n-io/n8n/pull/16405. Users should upgrade to version >= 1.99.1.

Users should upgrade to this version or later to ensure proper authorization checks are enforced before stopping workflow executions.

Workarounds

To mitigate this issue without upgrading:

Restrict access to the /rest/executions/:id/stop endpoint via reverse proxy or API gateway.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`n8n`	all versions	1.99.1`npm install n8n@1.99.1`

Affected Products

1 product · 1 configurations

Application

n8nn8n

< 1.99.1

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for n8n, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update n8n to 1.99.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-52554 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

## Summary An authorization vulnerability was discovered in the `/rest/executions/:id/stop` endpoint of n8n. An authenticated user can stop workflow executions that they do not own or that have not been shared with them, leading to potential business disruption. ### Impact This is an **improper authorization** vulnerability. While most API methods enforce user-scoped access to workflow execution IDs, the `/stop` endpoint fails to do so. An attacker can guess or enumerate execution IDs (which are sequential and partially exposed via verbose error messages) and terminate active workflows init

O3 Security · Impact-Aware SCA

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