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CVE-2026-56775

MEDIUM
5.4
CVSS 3.1
Description
n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization vulnerability in three mutating evaluation test-run endpoints that authorize state-changing actions using the workflow:read scope instead of the action-appropriate workflow:execute scope. On instances using Advanced Permissions (Enterprise/Cloud) with projects and viewer roles, an authenticated user with the project:viewer role can start new evaluation test runs, cancel in-flight runs, and delete run records for workflows they only have read access to.

Metadata

CVE ID
CVE-2026-56775
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-23 01:22 UTC
Published
2026-07-08 13:49 UTC
Last updated
2026-07-08 14:31 UTC
Primary CWE
CWE-863
Incorrect Authorization
Vendor / Product
n8n / n8n
Sources
cve.org  ·  NVD

Severity & Metrics

5.4 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (3)
VendorProductPlatformVersions
n8n n8n — 0 < 1.123.55, 1.123.55
n8n n8n — 0 < 2.26.2, 2.26.2
n8n n8n — 0 < 2.25.7, 2.25.7
Weakness (CWE)
CWESourceDescription
CWE-863 cna Incorrect Authorization
CVSS scores (2)
ScoreSeverityVersionSourceVector
5.4 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
5.3 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
References (2)
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