CVE-2026-27577 in the critical feed json
n8n: Expression Sandbox Escape Leads to RCE
published 2026-02-25 8 mo ago modified 2026-07-28 3 mo ago also EUVD-2026-8761 , GHSA-vpcf-gvg4-6qwr
- cvss
- 9.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.7%
- EPSS 10.7% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n. The issues have been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate all known vulnerabilities. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or deploy n8n in a hardened environment with restricted operating system privileges and network access to reduce the impact of potential exploitation. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Patch / fix
- npm n8n 1.123.22, 2.9.3, 2.10.1
- n8n n8n 1.123.22, 2.9.3, 2.10.1
- github.com/n8n-io/n8n@1479aab commit
- github.com/n8n-io/n8n@9e5212e commit
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
10.72% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.4 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| GitHub | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| CNA | 4.0 | 9.4 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | n8n | <1.123.22 >=2.0.0, <2.9.3 >=2.10.0, <2.10.1 |
1.123.22 2.9.3 2.10.1 |
Affected products
- n8n-io n8n
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/n8n-io/n8n/commit/1479aab2d32fe0ee087f82b9038b1035c98be2f6
web, patch
-
github.com
/n8n-io/n8n/commit/9e5212ecbc5d2d4e6f340b636a5e84be6369882e
web, patch
-
github.com
/n8n-io/n8n/security/advisories/GHSA-vpcf-gvg4-6qwr
web, mitigation, vendor-advisory
-
github.com
/n8n-io/n8n/security/advisories/GHSA-v98v-ff95-f3cp
web, not-applicable
-
docs.n8n.io
/hosting/securing/overview
web, not-applicable
-
nvd.nist.gov
/vuln/detail/CVE-2026-27577
advisory
-
github.com
/n8n-io/n8n
package
Sources
- CVE List CVE-2026-27577
- GitHub Advisory GHSA-vpcf-gvg4-6qwr
- NVD CVE-2026-27577
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.