GHSA-pcmq-25r3-5w9v: Path Traversal

Published Oct 7, 2026
·
Updated

Impact

Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host.

Patches

Patched in @backstage/plugin-catalog-backend version 3.9.1

Workarounds

No practical workarounds are available. Upgrade to the patched version.

Affected Software

1 affected componentFixes available
npm/@backstage/plugin-catalog-backend<3.9.1
3.9.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade npm/@backstage/plugin-catalog-backend to a version that resolves this vulnerability.

    Fixed in 3.9.1
  2. Upgrade

    Upgrade @backstage/plugin-catalog-backend to a version that resolves this vulnerability.

    Fixed in 3.9.1

Event History

Oct 7, 2026
Advisory Published
via GitHub·05:59 PM
Data Sourced
via GitHub·05:59 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

Which deployments should prioritize remediation?

Deployments using @backstage/plugin-catalog-backend under configurations that can cause unintended location types to be processed should prioritize upgrading. The advisory does not identify the specific configurations or location types involved.

2

What level of attacker access is indicated by the published severity vector?

The published vector indicates network reachability, low privileges, no user interaction, and high attack complexity. The stated impact is limited to integrity, with no confidentiality or availability impact listed.

3

Is there a mitigation if an immediate upgrade is not possible?

No practical workaround is available. Upgrade @backstage/plugin-catalog-backend to version 3.9.1, which contains the patch.

Contact

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