GHSA-c37g-w77q-m4vp

Suggest an improvement
Source
https://github.com/advisories/GHSA-c37g-w77q-m4vp
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c37g-w77q-m4vp/GHSA-c37g-w77q-m4vp.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c37g-w77q-m4vp
Aliases
Downstream
Published
2026-06-16T17:51:32Z
Modified
2026-07-20T13:45:32Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • 6.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CVSS Calculator
Summary
n8n: SQL Injection in Postgres v1/TimesclaeDB Nodes
Details

Impact

An authenticated user with permission to create or modify workflows could supply a crafted parameters to the TimescaleDB and/or legacy Postgres v1 node's allowing arbitrary SQL to be injected and executed against the connected database within the privileges of the configured database account.

Patches

The issue has been fixed in n8n versions 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:

  • Limit workflow creation and editing permissions to fully trusted users only.
  • Disable the Postgres and TimescaleDB node by adding n8n-nodes-base.postgres, n8n-nodes-base.timescaleDb to the NODES_EXCLUDE environment variable.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Database specific 
{
    "cwe_ids":  [
        "CWE-89"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-16T17:51:32Z",
    "nvd_published_at":  "2026-06-23T16:17:01Z",
    "severity":  "MODERATE"
}
References

Affected packages

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
2.26.0
Fixed
2.26.2

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c37g-w77q-m4vp/GHSA-c37g-w77q-m4vp.json"

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.25.7

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c37g-w77q-m4vp/GHSA-c37g-w77q-m4vp.json"