CVE-2026-103249

HIGHPre-NVD 7.67.6—
EchelonGraph scoreHIGH confidence

Score 7.6 from GitHub Security Advisory published 2026-10-01. A secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource Locator parameter dropdown link handling. Workflow authors can inject malicious script URLs that execute arbitrary JavaScript in the editor origin when other users open the node dropdown and click the external-link icon, with the payload persisting across workflow imports and shares.

CVSS v3
7.6
EG Score
7.6HIGHhigh confidence
EG Risk
34
EG Risk 34/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity76% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
10th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 1, 2026

Last Modified

October 1, 2026

Advisory Details (2)

Auto-updated Oct 1, 2026
Patch available. Sources: github.
generic

n8n before 1.123.80, 2.39.6, and 2.40.1 Stored DOM XSS via Resource Locator | Advisories | VulnCheck

https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-stored-dom-xss-via-resource-locator
github Patch Available

Stored DOM XSS via Resource Locator Dropdown Link Handling · Advisory · n8n-io/n8n · GitHub

https://github.com/n8n-io/n8n/security/advisories/GHSA-c2wp-6fgc-xjq4

Vendor Advisories for CVE-2026-103249(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 02:49 UTCGHSA enrichment
  2. 2026-10-03 14:56 UTCEG score recompute
  3. 2026-10-03 14:56 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 03:04 UTCEG score recompute
  6. 2026-10-03 03:04 UTCGHSA enrichment
  7. 2026-10-02 15:11 UTCGHSA enrichment
  8. 2026-10-02 03:17 UTCGHSA enrichment
  9. 2026-10-01 15:23 UTCEG score recompute
  10. 2026-10-01 15:23 UTCGHSA enrichment
  11. 2026-10-01 15:06 UTCEG score recompute
  12. 2026-10-01 15:06 UTCGHSA enrichment
  13. 2026-10-01 11:27 UTCEG score recompute
  14. 2026-10-01 10:51 UTCEG score recompute
  15. 2026-10-01 10:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-103249?
CVE-2026-103249 is a high vulnerability published on October 1, 2026. n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource Locator parameter dropdown link handling. Workflow authors can inject malicious script URLs that execute arbitrary JavaScript in the editor…
When was CVE-2026-103249 disclosed?
CVE-2026-103249 was first published on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-103249 actively exploited?
CVE-2026-103249 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-103249?
CVE-2026-103249 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-103249?
A fix for CVE-2026-103249 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-103249 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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