CVE-2026-54308

n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

HIGH

7.2

CVSS Score

Published: June 23, 2026 at 03:42 PM UTC

Updated: October 25, 2026 at 11:10 PM UTC

2 products affected across 2 vendorsN8NN8N

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Severity

HIGH7.2

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to execute with attacker-controlled data. This vulnerability is fixed in 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 < 2.25.72.26.0 ≤ v < 2.26.2

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 < 2.25.7

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

https://github.com/n8n-io/n8n/security/advisories/GHSA-jvc7-762p-3743

References (1)

x_refsource_CONFIRMMitigationVendor Advisory

Source: cverecord

https://github.com/n8n-io/n8n/security/advisories/GHSA-jvc7-762p-3743

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.2HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-290

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