n8n's JavaScript task runner shared a single module cache across all users' Code-node executions. In affected versions (before 1.123.67, 2.31.5, and 2.32.1), a user able to run a Code node could poison a cached module and thereby alter other users' Code-node executions on the same runner, affecting their confidentiality, integrity, or availability. This is a cross-user isolation break within a single n8n instance and does not constitute a sandbox escape or remote code execution. Only multi-user instances running the JS task runner with built-in or external modules enabled are affected.
CVE-2026-72764
This medium-severity CVE scores 5.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 69% 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).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.8
- EG Score
- 5.8(medium)
- EG Risk
- 26(Track)EG Risk 26/100SSVC: 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 computedSeverity58% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 31%
- KEV
- Not listed
Published
August 11, 2026
Last Modified
August 11, 2026
Advisory Details (2)
Auto-updated Aug 11, 2026n8n before 1.123.67 Module Cache Poisoning via Code Node | Advisories | VulnCheck
https://www.vulncheck.com/advisories/n8n-before-module-cache-poisoning-via-code-nodeCross-Tenant Module-Cache Poisoning in the JS Task Runner · Advisory · n8n-io/n8n · GitHub
https://github.com/n8n-io/n8n/security/advisories/GHSA-9cmh-xcqm-5hqrVendor Advisories for CVE-2026-72764(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 | — | 1.123.67 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 25× in last 7d / 36× 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.
- 2026-08-21 06:36 UTCEG score recompute
- 2026-08-21 06:36 UTCGHSA enrichment
- 2026-08-20 22:56 UTCEPSS rescore
- 2026-08-20 07:30 UTCEG score recompute
- 2026-08-20 07:29 UTCGHSA enrichment
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-19 08:23 UTCEG score recompute
- 2026-08-19 08:23 UTCGHSA enrichment
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 09:17 UTCEG score recompute
- 2026-08-18 09:17 UTCGHSA enrichment
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 10:11 UTCEG score recompute
- 2026-08-17 10:11 UTCGHSA enrichment
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 11:05 UTCEG score recompute
- 2026-08-16 11:05 UTCGHSA enrichment
- 2026-08-16 02:15 UTCEPSS rescore
- 2026-08-15 12:00 UTCEG score recompute
- 2026-08-15 12:00 UTCGHSA enrichment
- 2026-08-15 01:31 UTCEPSS rescore
- 2026-08-14 12:53 UTCEG score recompute
- 2026-08-14 12:53 UTCGHSA enrichment
Show 11 moreShow fewer
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-13 13:47 UTCGHSA enrichment
- 2026-08-12 14:41 UTCEG score recompute
- 2026-08-12 14:41 UTCGHSA enrichment
- 2026-08-12 13:51 UTCEPSS rescore
- 2026-08-11 15:35 UTCEG score recompute
- 2026-08-11 15:35 UTCGHSA enrichment
- 2026-08-11 14:32 UTCEG score recompute
- 2026-08-11 13:25 UTCEG score recompute
- 2026-08-11 12:22 UTCEG score recompute
- 2026-08-11 12:22 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-668
- CVE-2012-1846EG 10.0HIGH
- CVE-2019-10781EG 9.8CRITICAL
- CVE-2008-7291EG 9.8CRITICAL
- CVE-2019-12929EG 9.8EPSS p91CRITICAL
- CVE-2019-12928EG 9.8EPSS p98CRITICAL
- CVE-2018-7846EG 9.8EPSS p98CRITICAL
- CVE-2018-18068EG 9.8CRITICAL
- CVE-2018-7072EG 9.8CRITICAL
- CVE-2017-18129EG 9.8CRITICAL
- CVE-2017-16610EG 9.8EPSS p91CRITICAL
Frequently asked(5)
What is CVE-2026-72764?
When was CVE-2026-72764 disclosed?
Is CVE-2026-72764 actively exploited?
What is the CVSS score of CVE-2026-72764?
How do I remediate CVE-2026-72764?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-72764
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