CVE-2026-106510

highpriority · track · 0EPSS 0.005 · 41 %ileUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.48% (41st) EPSS

CVSS 7.7 · high

Is it mine?

6 products

Check your exposure

Who says so?

2 sources

nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:Lsecondary · security-advisories@github.comexploitability 1.8 · impact 5.3

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:Lsecondary · OSV

v3.17.1highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-183USCWE-183USCWE-470USCWE-470US

affected products (6)

Products and version ranges known to be affected.

linuxfoundation backstage< 1.50.5nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage= 1.51.0nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage1.51.1 → 1.54.6nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage plugin-techdocs-node< 1.14.6nvdUScpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*
linuxfoundation backstage plugin-techdocs-node1.15.0 → 1.15.4nvdUScpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*
npm @backstage/plugin-techdocs-node< 1.15.4osvUSpkg:npm/%40backstage/plugin-techdocs-node

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-4488-j8vj-vqqvBackstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml2026-10-07ghsa · osvUS
### Impact 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. ### Patches Patched in `@backstage/plugin-techdocs-node`, version `1.15.4`. ### Workarounds If you cannot upgrade immediately: - Switch to `techdocs.builder: external` to isolate TechDocs builds in a container. - Restrict who can register catalog entities with TechDocs annotations. - Audit existing catalog entities for suspicious `markdown_extensions` values in their `mkdocs.yml` files.

sources

Which sources assert this record, and when.

nvd osv NVD CVE.org MITRE

published 2026-10-07modified 2026-10-13

references (5) nvd

External citations — patches, advisories, analysis.

https://github.com/backstage/backstage/commit/02cd7cdbb18b687446277b5602adaee7f1d53cbbPatch
https://github.com/backstage/backstage/commit/a900a9953c8f7ad3ba1906d1d257725a9996cc9dPatch
https://github.com/backstage/backstage/releases/tag/v1.50.5PatchRelease Notes
https://github.com/backstage/backstage/releases/tag/v1.54.6PatchRelease Notes
https://github.com/backstage/backstage/security/advisories/GHSA-4488-j8vj-vqqvMitigationVendor Advisory

scry

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