CVE-2026-54306: n8n is an open source workflow automation platform

Q: How do I fix CVE-2026-54306?

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

Q: Is CVE-2026-54306 being exploited?

CVE-2026-54306 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-2026-54306 affect?

CVE-2026-54306 affects n8n. Severity is medium (CVSS 6.4). n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copy

Q: How urgent is CVE-2026-54306?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2026-54306 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 is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copying. These fields could be surfaced and consumed as normal values by downstream built-in nodes. Where a workflow combines a public webhook with action nodes that consume the resulting fields, an attacker could

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 80%)
CISA exploited list	No
Weakness	CWE-1321
Published	2026-06-23
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: n8n

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-23 17:17 UTCPublished CVE record published
2026-10-25 23:10 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-2026-54306?

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

Is CVE-2026-54306 being exploited?

CVE-2026-54306 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-2026-54306 affect?

CVE-2026-54306 affects n8n. Severity is medium (CVSS 6.4). n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copy

How urgent is CVE-2026-54306?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2026-42229 HIGH 8.8 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54312 HIGH 8.5 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54305 CRITICAL 9.9 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54307 CRITICAL 9.6 UPGRADE n8n is an open source workflow automation platform
CVE-2026-54308 HIGH 7.2 UPGRADE n8n is an open source workflow automation platform

References

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