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CVE-2026-106508

5.3 · MEDIUM

Backstage is an open framework for building developer portals.

Published Oct 6, 2026linuxfoundationCWE-22EPSS 0.39%

Overview

CVE-2026-106508 is a medium-severity vulnerability affecting linuxfoundation backstage_plugin-techdocs-node. It was published on October 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by potential file exposure through local techdocs publisher. When using the local TechDocs publisher (techdocs.publisher.type: 'local'), it was possible for the documentation serving endpoint to follow filesystem references outside the intended documentation tree, potentially exposing host files to authenticated users. This is mitigated by the fact that exploration requires preconditions that do not arise through normal MkDocs operation. Cloud-based publishers (S3, GCS, Azure Blob Storage) are not affected. This issue is fixed in version 1.15.4.

Remediation

Check the references section for vendor advisories and patches from linuxfoundation. Update backstage_plugin-techdocs-node to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxfoundationbackstage_plugin-techdocs-node>= 0, < 1.15.4Affected
linuxfoundationbackstage>= 0, < 1.54.6Affected

References

GitHubgithub.com/backstage/backstage/commit/6aecb26f337ffec1d4e67ce903cf1e39b6082ec4GitHubgithub.com/backstage/backstage/releases/tag/v1.54.6GitHubgithub.com/backstage/backstage/security/advisories/GHSA-cm77-ch27-6w6v

How CyberStrike helps

Frequently asked questions

What is CVE-2026-106508?

CVE-2026-106508 is a medium-severity vulnerability affecting linuxfoundation backstage_plugin-techdocs-node. It was published on October 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-106508?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-106508?

Check the references section for vendor advisories and patches from linuxfoundation. Update backstage_plugin-techdocs-node to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-106508?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-106508 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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