🛡️ GHSA-2g8g-63j4-9w3r — plugin-scaffolder-backend

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV

8.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

RCE vulnerability affecting v1beta3 templates in @backstage/plugin-scaffolder-backend

The templating library used by the scaffolder backend assumes that templates are trusted which is an undesired property of the scaffolder-backend. This has now been mitigated by sandboxing the template code execution.

Impact

A malicious actor with write access to a registered scaffolder template could manipulate the template in a way that allows for remote code execution on the scaffolder-backend instance. This was only exploitable in the template yaml definition itself and not by user input data.

Patches

This is vulnerability is patched in version 0.15.14 of @backstage/plugin-scaffolder-backend.

For more information

If you have any questions or comments about this advisory:

Open an issue in the [Backstage repository](https://github.com/backstage/backstage)
Visit our chat, linked to in [Backstage README](https://github.com/backstage/backstage)

Affected software

GHSA-2g8g-63j4-9w3r is recorded against 1 package.

@backstage/plugin-scaffolder-backend

Timeline and source

Published on 1 December 2021 and last revised on 29 November 2021. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Package)

Details

Severity HIGH

CVSS Score 8.0

CVSS Vector N/A

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2021-12-01

Updated 2026-08-20

Modified 2021-11-29

Fix URL N/A

Affected Packages

Software	From version	Fixed in
@backstage/plugin-scaffolder-backend	—	—

References

WEB https://github.com/backstage/backstage/security/advisories/GHSA-2g8g-63j4-9w3r

PACKAGE https://github.com/backstage/backstage

🔗 NVD 🔗 Mitre

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