n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the /rest/active-workflows endpoint returned every active workflow ID on the instance to any member regardless of sharing. Workflow activation, deactivation, and publication push events were also broadcast to clients that could not access the affected workflow, disclosing workflow IDs, version IDs, and activation error details. The affected paths include packages/cli/src/services/active-workflows.service.ts and packages/cli/src/workflows/workflow-push-notifier.service.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.
CVE-2026-86994
MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 90% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(medium)
- EG Risk
- 19(Track)EG Risk 19/100SSVC: Track
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 computedSeverity43% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 10%
- KEV
- Not listed
Published
September 8, 2026
Last Modified
September 10, 2026
Advisory Details (4)
Auto-updated Sep 8, 2026Patch available. Sources: github_release, github.
github Patch Available
Cross-User Active Workflow ID and Lifecycle Event Disclosure via Missing userId Filter · Advisory · n8n-io/n8n · GitHub
https://github.com/n8n-io/n8n/security/advisories/GHSA-65xw-2v52-jhxcgithub_release Patch Available
[email protected]
Patch available: n8n-io/n8n [email protected] (pre-release)
https://github.com/n8n-io/n8n/releases/tag/[email protected]github_release Patch Available
[email protected]
Patch available: n8n-io/n8n [email protected]
https://github.com/n8n-io/n8n/releases/tag/[email protected]github_release Patch Available
[email protected]
Patch available: n8n-io/n8n [email protected]
https://github.com/n8n-io/n8n/releases/tag/[email protected]Vendor Advisories for CVE-2026-86994(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| n8n | — | 1.123.76 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 22× 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.
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-18 13:34 UTCEG score recompute
- 2026-09-17 19:32 UTCEPSS rescore
- 2026-09-17 11:15 UTCEG score recompute
- 2026-09-16 14:09 UTCEPSS rescore
- 2026-09-16 08:56 UTCEG score recompute
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-15 06:19 UTCEG score recompute
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-14 04:00 UTCEG score recompute
- 2026-09-13 01:41 UTCEG score recompute
- 2026-09-11 23:22 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-10 21:03 UTCEG score recompute▼ 1.00
- 2026-09-10 21:02 UTCNVD updateCVSS v3 → 4.3
- 2026-09-09 16:46 UTCEG score recompute
- 2026-09-09 16:02 UTCEG score recompute
- 2026-09-08 22:32 UTCEG score recompute
- 2026-09-08 21:27 UTCEG score recompute
- 2026-09-08 21:24 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-86994?
CVE-2026-86994 is a medium vulnerability published on September 8, 2026. n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the /rest/active-workflows endpoint returned every active workflow ID on the instance to any member regardless of sharing. Workflow activation, deactivation, and publication push events were also broadcast to…
When was CVE-2026-86994 disclosed?
CVE-2026-86994 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86994 actively exploited?
CVE-2026-86994 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.9% of all scored CVEs.
What is the CVSS score of CVE-2026-86994?
CVE-2026-86994 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-86994?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86994, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-86994
Is Your Infrastructure Affected by CVE-2026-86994?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.