要点
- CVE-2026-106463 は backstage (linuxfoundation), backstage/plugin-catalog-backend-module-gitlab (linuxfoundation), @backstage/plugin-catalog-backend-module-gitlab に影響する深刻度「中」 (CVSS 5.4) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.17%（全脆弱性の 6.5% より高い）。
- 対処：1.54.6, 0.8.7 以降に更新してください。
概要
Impact
Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, this may allow unauthorized access with the permissions of a standard authenticated user.
Patches
- Upgrade
@backstage/plugin-catalog-backend-module-gitlab to version 0.8.7.
Workarounds
- Disable event-driven GitLab organization ingestion and rely on scheduled discovery until upgrading.
- Enforce organization membership independently at the authenticating proxy or sign-in resolver.
NVD の説明
Backstage is an open framework for building developer portals. Prior to 0.8.7, the @backstage/plugin-catalog-backend-module-gitlab package is affected by improper authorization in gitlab organizational user ingestion. Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, this may allow unauthorized access with the permissions of a standard authenticated user. This issue is fixed in version 0.8.7.
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