CVE-2026-29184

@backstage/plugin-scaffolder-backend: Potential Session Token Exfiltration via Log Redaction Bypass

State: Published
Severity: 2.0 Low
Published: Mar 7, 2026
Updated: Mar 9, 2026
Reserved: Mar 4, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	2.0 Low	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-532 Insertion of Sensitive Information into Log File

Affected Products

Product	Versions
backstagebackstage	< 3.1.4Affected

References

https://github.com/backstage/backstage/security/advisories/GHSA-8qp7-fhr9-fw53

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