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GHSA-8qp7-fhr9-fw53

LowCVSS 2 / 10
Published Mar 5, 2026·Last modified Mar 9, 2026
Affected Components(0)

No affected components available

Description

Impact

A malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs.

The attack requires:

  • The ability to register a template in the catalog
  • A victim who executes the malicious template

Patches

Patched in @backstage/plugin-scaffolder-backend version 3.1.4

Workarounds

  • Implement a custom permission policy that restricts scaffolder.task.read so users can only read their own task logs
  • Restrict who can register templates in the catalog to trusted users only

Resources

  • Backstage Scaffolder permissions documentation: https://backstage.io/docs/permissions/plugin-authors/01-setup/
  • Backstage Threat Model: https://backstage.io/docs/overview/threat-model/
Risk Scores
Base Score
2.0

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.

Threat Intelligence
1.9

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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