VulnerabilityAnalyzed

CVE-2026-106502

Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events.

MEDIUM 5.3EPSS 0.29%

Does this matter?

Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.

Description

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed credentials used during task execution from affected task events. This issue is fixed in version 4.1.0.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.29% probability · 22th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-532
Affected: linuxfoundation/backstage\/plugin-scaffolder-backend · linuxfoundation/backstage
Source: security-advisories@github.com

EPSS trend

EPSS moved from 0.3% on 7 October 2026 to 0.3% on 27 October 2026.

References

https://github.com/backstage/backstage/commit/3f1e869708f002fb9838624b7379deb251691b47Patch
https://github.com/backstage/backstage/releases/tag/v1.54.6Patch, Release Notes
https://github.com/backstage/backstage/security/advisories/GHSA-95p4-vv4g-jxxmMitigation, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.