CVE-2026-54307

criticalpriority · track · 38OT risk · elevatedEPSS 0.004 · 31 %ileDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.39% (31st) EPSS
CVSS 9.6 · critical
Is it mine?
16 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-23

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.6
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.8–9.6

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 3.1 · impact 5.8
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Nsecondary · OSV
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Nsecondary · NCSC-NL NL
v4.08.5highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:Lsecondary · ENISA EU
v4.08.5highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com
v4.05.8mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USCWE-863USCWE-863US
04

affected products (16)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0212Kwetsbaarheden verholpen in n8n workflow automation platformNL2026-06-29csaf · ncsc_nlNL

    n8n heeft meerdere kwetsbaarheden verholpen in het n8n workflow automation platform, specifiek in versies voor 1.123.55, 2.24.0, 2.25.7, 2.26.1 en 2.26.2.

  • WID-SEC-W-2026-1875n8n: Mehrere SchwachstellenDeutsch2026-06-10csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, SQL-Injection- und Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen, was weitere Angriffe einschließlich einer Rechteausweitung ermöglichen kann.

  • GHSA-pmqw-72cg-wx85n8n: Credential Exfiltration via Permission Bypass2026-06-16ghsa · osvUS

    ## Impact 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. ## Patches The issue has been fixed in n8n versions 1.123.55, 2.25.7, and 2.26.2. Users should upgrade to one of these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Restrict workflow sharing to fully trusted users only. - Audit shared workflows for unexpected credential references or recent modifications. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundncsc_nlnvdosvNVDCVE.orgMITRE
published 2026-06-23modified 2026-06-26
08

references (3)

External citations — patches, advisories, analysis.

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