Symlink Attack Affecting @backstage/plugin-techdocs-node package, versions <1.15.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Oct 2026
- disclosed7 Oct 2026
- creditUnknown
Introduced: 7 Oct 2026
NewCVE-2026-106508 (opens in a new tab)How to fix?
Upgrade @backstage/plugin-techdocs-node to version 1.15.4 or higher.
Overview
@backstage/plugin-techdocs-node is a Common node.js functionalities for TechDocs, to be shared between techdocs-backend plugin and techdocs-cli
Affected versions of this package are vulnerable to Symlink Attack via symlink handling in the LocalPublish publisher, where the publish pipeline copies documentation directories to a local storage path without validating that symbolic links within the source directory resolve to paths inside the documentation tree. An authenticated attacker who can influence the content of a TechDocs documentation directory can plant symlinks pointing to arbitrary host filesystem paths, causing the documentation serving endpoint to expose those files.
Note: This is only exploitable when the local TechDocs publisher is configured (techdocs.publisher.type: 'local').