# CVE-2026-54307 — n8n-io n8n

> As of 2026-06-23, CVE-2026-54307 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in n8n-io n8n, CVSS v4.0 8.5, EPSS 0.3% (24.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-54307 as of 2026-06-23; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-06-23

## What is CVE-2026-54307?

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access. This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.

The record classifies CVE-2026-54307 under weakness class [CWE-863](https://intel.threadlinqs.com/cwe/CWE-863). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 104 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 8.5 — High (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 24.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-23

## Is CVE-2026-54307 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [n8n-io](https://intel.threadlinqs.com/vendors/n8n-io): n8n

Affected software packages:

- `npm:n8n` — patched in 1.123.55
- `npm:n8n` — patched in 2.26.2
- `npm:n8n` — patched in 2.25.7

## How to fix CVE-2026-54307

Fixed versions are recorded for 3 packages: npm:n8n 1.123.55, npm:n8n 2.26.2, npm:n8n 2.25.7. No vendor patch reference has been recorded for CVE-2026-54307 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-54307

No threat campaign in the Threadlinqs corpus currently references CVE-2026-54307, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-06-26. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-54307
Full detection coverage and IOCs for threats exploiting CVE-2026-54307 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp