CVE-2026-59254: n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authentic

unknownCVE-2026-59254

n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-07-15
Last updated: 2026-07-15
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-59254

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-592540.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59254	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

mediumGHSA-2434-3x6q-8r99: n8n: External Secrets Accessible via Workflow Expressions Outside Credentialsghsa

Recent advisories for n8n

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[NEW] [high] n8n: Multiple vulnerabilitiescert-bund · 2026-07-23
mediumGHSA-652q-gvq3-74qv: n8n: Snowflake Node executeQuery Operation Allows SQL Injection via Unparameterized Expre…ghsa · 2026-07-22
mediumGHSA-jqwr-vx3p-r266: n8n: PostgresTrigger Node SQL Injection Allows Authenticated Users to Execute Arbitrary S…ghsa · 2026-07-22
mediumGHSA-9cmh-xcqm-5hqr: n8n: Cross-Tenant Module-Cache Poisoning in the JS Task Runnerghsa · 2026-07-22
mediumGHSA-89gh-3pgc-v5h2: n8n: Custom Header Credential Values Leaked in Plaintext into LLM Node Execution Dataghsa · 2026-07-22
mediumGHSA-33q9-f52j-gc75: n8n: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhookghsa · 2026-07-22