CVE-2026-106510

EUVD-2026-94369

07.10.2026, 15:17

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
GitHub_M	CNA	7.7 HIGH	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Base Score

CVSS 3.x

EPSS Score

Percentile: 36.3%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
backstage	backstage	𝑥 < 1.50.5	CNA
backstage	backstage	𝑥 < 1.14.6	CNA

Common Weakness Enumeration

CWE-183 - Permissive List of Allowed Inputs
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are explicitly allowed by policy because the inputs are assumed to be safe, but the list is too permissive - that is, it allows an input that is unsafe, leading to resultant weaknesses.

References

https://github.com/backstage/backstage/commit/02cd7cdbb18b687446277b5602adaee7f1d53cbb

https://github.com/backstage/backstage/commit/a900a9953c8f7ad3ba1906d1d257725a9996cc9d

https://github.com/backstage/backstage/releases/tag/v1.50.5

https://github.com/backstage/backstage/releases/tag/v1.54.6

https://github.com/backstage/backstage/security/advisories/GHSA-4488-j8vj-vqqv