CVE-2026-106498

Description

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity with placeholder directives that reference resources outside the entity's source repository. Under certain configurations, this could allow access to data not intended to be available to the user. This issue is fixed in versions 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1.

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Produits concernés

• backstage
• @backstage plugin-catalog-backend
• Linuxfoundation backstage plugin-catalog-backend
• Linuxfoundation backstage

Scores CVSS

Faiblesses (CWE)

• CWE-863
• CWE-918

Références

• https://github.com/backstage/backstage/commit/0b0f6fc89b4eb4872c76a498abbe1dc65998bb6e Patch
• https://github.com/backstage/backstage/commit/286bfc1f9cc3608a073b41016be302785be385d1 Patch
• https://github.com/backstage/backstage/commit/61a10f19926aeda7f4a32de48d733e6710584634 Patch
• https://github.com/backstage/backstage/commit/99729e925fd2bd40ba210022351a0ee6318e6197 Patch
• https://github.com/backstage/backstage/commit/e786ac309ed2d775daf2309393c015c43902d6f6 Patch
• https://github.com/backstage/backstage/releases/tag/v1.49.6 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.50.5 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.51.3 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.53.2 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.54.6 PatchRelease Notes
• https://github.com/backstage/backstage/security/advisories/GHSA-qgvj-qcf8-xq73 MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories