CVE-2026-29184 Details
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.
A vulnerability exists in Backstage versions through 3.1.3 within the Scaffolder plugin. A malicious template can exploit a log redaction bypass to exfiltrate secrets from task event logs. This issue requires the ability to register a template in the catalog and for a victim to execute the compromised template.
Users can upgrade to Backstage Scaffolder Backend version 3.1.4 to address this vulnerability. Additionally, implementing a custom permission policy to restrict access to task logs and limiting template registration to trusted users can help mitigate the risk.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 9, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/backstage/backstage/security/advisories/GHSA-8qp7-fhr9-fw53 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-532 | Insertion of Sensitive Information into Log File | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linuxfoundation backstage/plugin-scaffolder-backend | < 3.1.4 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 25, 2026 | Reanalysis | [email protected] |
| Apr 21, 2026 | Initial Analysis | [email protected] |
| Mar 7, 2026 | New CVE Received | [email protected] |