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 con...
Product
backstage backend-defaults vulnerabilities
6 published CVES affecting backstage backend-defaults, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 6
- Critical
- 0
- High
- 1
- Medium
- 4
- Low
- 1
- Unscored
- 0
- CISA KEV
- 0
Latest backstage backend-defaults CVEs
Newest publication first
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MediumCVSS 4.3 EPSS 0.24%
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MediumCVSS 4.9 EPSS 0.31%
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 obj...
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CVE-2026-106493 Backstage: Cloud storage catalog locations may cross configured storage boundaries
PublishedMediumCVSS 4.1 EPSS 0.28%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...
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MediumCVSS 6.5 EPSS 0.21%
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 acce...
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LowCVSS 3.7 EPSS 0.24%
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 cata...
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HighCVSS 7.1 EPSS 0.53%
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 a...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.