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Vulnerability details: VCID-n38u-498z-gke2
Vulnerability ID VCID-n38u-498z-gke2
Aliases CVE-2026-44791
GHSA-wrwr-h859-xh2r
Summary n8n Has an XML Node Prototype Pollution Patch Bypass ## Impact An authenticated user with permission to create or modify workflows could bypass the patch for GHSA-hqr4-h3xv-9m3r in the XML node. When combined with other nodes, this could lead to RCE on the n8n host. ## Patches The issue has been fixed in n8n versions 1.123.43, 2.20.7, and 2.22.1. Users should upgrade to one of these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
System Score Found at
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2026-44791
cvssv4 9.4 https://github.com/advisories/GHSA-hqr4-h3xv-9m3r
generic_textual CRITICAL https://github.com/advisories/GHSA-hqr4-h3xv-9m3r
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-wrwr-h859-xh2r
cvssv4 9.4 https://github.com/n8n-io/n8n
generic_textual CRITICAL https://github.com/n8n-io/n8n
cvssv3.1_qr CRITICAL https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
cvssv4 9.4 https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
generic_textual CRITICAL https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-44791
https://github.com/advisories/GHSA-hqr4-h3xv-9m3r
https://github.com/n8n-io/n8n
https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
GHSA-wrwr-h859-xh2r https://github.com/advisories/GHSA-wrwr-h859-xh2r
No exploits are available.
Vector: 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 Found at https://github.com/advisories/GHSA-hqr4-h3xv-9m3r
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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passive

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none

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Vector: 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 Found at https://github.com/n8n-io/n8n
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

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low

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Vector: 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 Found at https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.14713
EPSS Score 0.00046
Published At June 12, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-12T07:51:00.328306+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-wrwr-h859-xh2r/GHSA-wrwr-h859-xh2r.json 38.6.0