CVE-2026-27495
Authenticated RCE in n8n sandbox prior to patch versions.
Is CVE-2026-27495 being exploited?
Not confirmed. CVE-2026-27495 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.73% probability of exploitation in the next 30 days.
How severe is CVE-2026-27495?
CVE-2026-27495 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-27495?
Yes. A fix has been recorded for CVE-2026-27495. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27495 affect?
CVE-2026-27495 affects n8n Workflow Automation Platform (versions < 2.10.1, < 2.9.3, < 1.123.22). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27495?
Upgrade to patched versions; restrict workflow perms; consider external runners as interim.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated RCE via sandbox escape; internal runners could allow full host compromise; external runners risk cross-task access.
Patch when possible
- affected< 1.123.22
- affected>= 2.0.0 and < 2.9.3
- affected>= 2.10.0 and < 2.10.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.