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Sicherheitslücken in @backstage/backend-defaults

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für @backstage/backend-defaults: 4. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 6

  1. CVE-2026-106495

    Mittel · CVSS 4.3EPSS 0,24%Korrektur verfügbar

    Backstage: Improper access control in backend action invocation

    Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper access control in backend action invocation. An authenticated user could invoke actions that an operator had excluded through action configuration. Existing action permissions and downstream authorization remain enforced. This issue is fixed in version 0.17.8.

    @backstage/backend-defaultsNode.js
    • Auf 0.17.8 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  2. CVE-2026-106494

    Mittel · CVSS 4.4EPSS 0,31%Korrektur verfügbar

    Backstage: Improper input validation in cloud storage URL readers

    Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.

    @backstage/backend-defaultsNode.js
    • Auf 0.17.8 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  3. CVE-2026-106493

    Niedrig · CVSS 3EPSS 0,28%Korrektur verfügbar

    Backstage: Cloud storage catalog locations may cross configured storage boundaries

    Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.

    @backstage/backend-defaultsNode.js
    • Auf 0.17.8 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  4. CVE-2026-106492

    Hoch · CVSS 7.6EPSS 0,21%Korrektur verfügbar

    Backstage: Improper preservation of access restrictions during service credential delegation

    Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8.

    @backstage/backend-defaultsNode.js
    • Auf 0.17.8 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  5. CVE-2026-24048

    Niedrig · CVSS 3.5EPSS 0,24%Korrektur verfügbar

    Backstage has a Possible SSRF when reading from allowed URL's in `backend.reading.allow`

    Backstage is an open framework for building developer portals, and @backstage/backend-defaults provides the default implementations and setup for a standard Backstage backend app. Prior to versions 0.12.2, 0.13.2, 0.14.1, and 0.15.0, the `FetchUrlReader` component, used by the catalog and other plugins to fetch content from URLs, followed HTTP redirects automatically. This allowed an attacker who controls a host listed in `backend.reading.allow` to redirect requests to internal or sensitive URLs that are not on the allowlist, bypassing the URL allowlist security control. This is a Server-Side Request Forgery (SSRF) vulnerability that could al

    @backstage/backend-defaults @backstage/backend-defaults @backstage/backend-defaultsNode.js
    • Auf 0.12.2 aktualisieren
    • Auf 0.13.2 aktualisieren
    • Auf 0.14.1 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  6. CVE-2026-24046

    Hoch · CVSS 7.1EPSS 0,53%Öffentlicher ExploitKorrektur verfügbar

    Backstage has a Possible Symlink Path Traversal in Scaffolder Actions

    Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files via the `debug:log` action by creating a symlink pointing to sensitive files (e.g., `/etc/passwd`, configuration files, secrets); delete arbitrary files via the `fs:delete` action by creating symlinks pointing outside the workspace, and write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks. This affects any Bac

    @backstage/backend-defaults @backstage/backend-defaults @backstage/backend-defaultsNode.js
    • Auf 0.12.2 aktualisieren
    • Auf 0.13.2 aktualisieren
    • Auf 0.14.1 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

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