Vulnerability · Published Jul 8, 2026 · Assigned by VulnCheck

CVE-2026-59253n8n - Improper Authorization in Workflow Assignment to Folders

Medium 5.3

In plain English

A medium-severity authorization bypass via user-controlled key in n8n from n8n. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 79.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

n8n before 2.28.0 contains an improper authorization vulnerability allowing authenticated users to assign workflows to folders in other projects. Attackers can bypass project and folder authorization boundaries by supplying crafted request payloads during workflow creation, causing logical integrity violations in target project folder structures.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	2.28.0	GHSA-2xgm-wc4g-5jvg

Affected products (as reported)

Vendor	Product	Versions
n8n	n8n	0 – before 2.28.0

Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

References

GitHub Security Advisory (GHSA-2xgm-wc4g-5jvg) vendor-advisory
VulnCheck Advisory: n8n - Improper Authorization in Workflow Assignment to Folders third-party-advisory