CVE-2026-56776: n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/t

Q: How do I fix CVE-2026-56776?

n8n: upgrade to 1.123.55, 2.25.7, 2.26.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-56776 being exploited?

CVE-2026-56776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-56776 affect?

CVE-2026-56776 affects n8n. Severity is high (CVSS 7.4). n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user wi

Routine

HIGH 7.4UPGRADE

CVE-2026-56776 is a high-severity flaw (CVSS 7.4) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a workflow can trigger a real evaluation test run, causing the workflow to execute via the internal workflow runner and resulting in unintended outbound API calls, data mutations, or othe

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-07-08
Last modified	2026-07-09

Publisher (CNA): VulnCheck · Vendor: n8n

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-08 14:17 UTCPublished CVE record published
2026-07-09 16:16 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 1.123.55 · >= 2.0.0 and < 2.25.7 · >= 2.26.0 and < 2.26.2

Fixed in: 1.123.55, 2.25.7, 2.26.2

Safe to downgrade to: a release before 2.0.0

1. Check installed version

npm ls n8n

2. UPGRADE to 1.123.55

npm install n8n@">=1.123.55"

3. If no update is available yet, DOWNGRADE to a release before 2.0.0

npm view n8n versions npm install n8n@"<2.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-56776?

n8n: upgrade to 1.123.55, 2.25.7, 2.26.2. Exact commands for each OS are on this page.

Is CVE-2026-56776 being exploited?

CVE-2026-56776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-56776 affect?

CVE-2026-56776 affects n8n. Severity is high (CVSS 7.4). n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user wi

How urgent is CVE-2026-56776?

Priority 31/100. High severity

Related CVEs

CVE-2026-54309 CRITICAL 10.0 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54310 CRITICAL 9.9 UPGRADE n8n is an open source workflow automation platform
CVE-2026-44789 CRITICAL 9.9 UPGRADE n8n is an open source workflow automation platform
CVE-2026-44791 CRITICAL 9.9 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54314 HIGH 7.5 UPGRADE n8n is an open source workflow automation platform

References

← Back to latest CVEs