CVE-2026-44791 json
n8n: XML Node Prototype Pollution Patch Bypass
published 5mo ago modified 14d ago also GHSA-wrwr-h859-xh2r , EUVD-2026-38485
- cvss
- 9.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could bypass the patch for CVE-2026-42232 in the XML node. When combined with other nodes, this could lead to RCE on the n8n host. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
Patch / fix
- npm n8n 1.123.43, 2.20.7, 2.22.1
- n8n n8n 1.123.43, 2.20.7, 2.22.1
Is CVE-2026-44791 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 |
| 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 |
| GitHub | 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 | <1.123.43 >=2.21.0, <2.22.1 >=2.0.0-rc.0, <2.20.7 |
1.123.43 2.22.1 2.20.7 |
Affected products
- n8n-io n8n
Classification
- Weakness
-
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
References
-
github.com
/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
web, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44791
advisory
-
github.com
/advisories/GHSA-hqr4-h3xv-9m3r
advisory
-
github.com
/n8n-io/n8n
package
Sources
- CVE List CVE-2026-44791
- GitHub Advisory GHSA-wrwr-h859-xh2r
- NVD CVE-2026-44791
Fencer Intel 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.