GHSA-2g8g-63j4-9w3r
RCE vulnerability affecting v1beta3 templates in @backstage/plugin-scaffolder-backend
GHSA-2g8g-63j4-9w3r is a vulnerability with no CVSS score yet in @backstage/plugin-scaffolder-backend, published December 1, 2021. No source lists public exploit code. Fixed in @backstage/plugin-scaffolder-backend 0.15.14.
- Severity
- UnratedNo CVSS score yet
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.15.14@backstage/plugin-scaffolder-backend
Description
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
- Visit our chat, linked to in Backstage README
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@backstage/plugin-scaffolder-backendnpm | before 0.15.14 | 0.15.14 |
What each source reports
GitHub AdvisoriesNo score
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
- Visit our chat, linked to in Backstage README
- Record
GHSA-2g8g-63j4-9w3r- Updated
- 2026-11-02
OSVNo score
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
- Visit our chat, linked to in Backstage README
- Record
GHSA-2g8g-63j4-9w3r- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.