CVE-2026-56778: n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry

Q: How do I fix CVE-2026-56778?

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

Q: Is CVE-2026-56778 being exploited?

CVE-2026-56778 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-2026-56778 affect?

CVE-2026-56778 affects n8n. Severity is medium (CVSS 6.4). n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only

Q: How urgent is CVE-2026-56778?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2026-56778 is a medium-severity flaw (CVSS 6.4) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a shared workflow can use the Public API to retry executions of that workflow, bypassing the intended permission boundary between read and execute access. This affects instances where workflows are sh

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-07-08
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: n8n

Last updated 2026-10-25 · 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
2026-10-25 20:10 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 2.25.7 · >= 2.26.0 and < 2.26.2

Fixed in: 2.25.7, 2.26.2

Safe to downgrade to: a release before 2.26.0

1. Check installed version

npm ls n8n

2. UPGRADE to 2.25.7

npm install n8n@">=2.25.7"

3. If no update is available yet, DOWNGRADE to a release before 2.26.0

npm view n8n versions npm install n8n@"<2.26.0"

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-2026-56778?

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

Is CVE-2026-56778 being exploited?

CVE-2026-56778 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-2026-56778 affect?

CVE-2026-56778 affects n8n. Severity is medium (CVSS 6.4). n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only

How urgent is CVE-2026-56778?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2026-59257 HIGH 8.8 UPGRADE n8n before 1.123.61, 2.x before 2.27.4, and 2.28.x before 2.28.1 contains a SQL injection vulnerability in the
CVE-2026-56360 MEDIUM 4.0 UPGRADE n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the Zende
CVE-2026-59206 HIGH 7.1 UPGRADE n8n is an open source workflow automation platform
CVE-2026-59207 MEDIUM 6.5 UPGRADE n8n is an open source workflow automation platform
CVE-2026-59209 MEDIUM 6.5 UPGRADE n8n is an open source workflow automation platform

References

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