Backstage is an open framework for building developer portals. Prior to version 3.1.4, a malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs. This issue has been patched in version 3.1.4.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-8qp7-fhr9-fw53 @backstage/plugin-scaffolder-backend Vulnerable to Potential Session Token Exfiltration via Log Redaction Bypass
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 10 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-117
References
Metrics threat_severity

None

threat_severity

Low


Mon, 09 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 09 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Backstage
Backstage backstage
Vendors & Products Backstage
Backstage backstage

Sat, 07 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Description Backstage is an open framework for building developer portals. Prior to version 3.1.4, a malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs. This issue has been patched in version 3.1.4.
Title @backstage/plugin-scaffolder-backend: Potential Session Token Exfiltration via Log Redaction Bypass
Weaknesses CWE-532
References
Metrics cvssV3_1

{'score': 2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-09T20:24:16.597Z

Reserved: 2026-03-04T14:44:00.714Z

Link: CVE-2026-29184

cve-icon Vulnrichment

Updated: 2026-03-09T20:15:42.441Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-07T15:15:55.080

Modified: 2026-03-09T13:35:34.633

Link: CVE-2026-29184

cve-icon Redhat

Severity : Low

Publid Date: 2026-03-07T15:03:18Z

Links: CVE-2026-29184 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-09T10:05:23Z

Weaknesses