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CVE-2026-54302

n8n: Stored XSS in Chat Trigger Node

MEDIUM
5.4
CVSS Score
Published: June 23, 2026 at 03:46 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
2 products affected across 2 vendorsN8NN8N

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, an authenticated user with workflow edit access could inject arbitrary JavaScript into the Chat Trigger's generated page by setting a malicious webhookId. When a logged-in user visited the chat URL, the injected code executed in the n8n origin with that user's session privileges. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

N8N· N8Nnpm
95%
v < 1.123.552.0.0 ≤ v < 2.25.72.26.0 ≤ v < 2.26.2
Affected range stops below 1.123.55, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.25.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.26.2, so it looks safe — our inference, not a vendor statement
N8N· N8N Io
90%
v < 1.123.55
Affected range stops below 1.123.55, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.25.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.26.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/n8n-io/n8n/security/advisories/GHSA-42h7-m79w-wvg5

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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