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3 vulnerabilities found for backend-defaults by @backstage

CVE-2026-106495 (GCVE-0-2026-106495)
Vulnerability from cvelistv5
Published
2026-10-12 20:11
Modified
2026-10-13 14:57
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-284 - Improper Access Control
Summary
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.
References
Impacted products
Vendor Product Version
backstage backstage Version: < 1.54.6
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-106494 (GCVE-0-2026-106494)
Vulnerability from cvelistv5
Published
2026-10-06 20:54
Modified
2026-10-07 15:32
Severity ?
4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-73 - External Control of File Name or Path
Summary
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.
References
Impacted products
Vendor Product Version
backstage backstage Version: < 1.54.6
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-106492 (GCVE-0-2026-106492)
Vulnerability from cvelistv5
Published
2026-10-06 20:48
Modified
2026-10-09 01:51
Severity ?
7.6 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CWE
  • CWE-269 - Improper Privilege Management
  • CWE-863 - Incorrect Authorization
Summary
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.
References
Impacted products
Vendor Product Version
backstage backstage Version: < 1.49.6
Version: >= 1.50.0-next.0, < 1.54.6
 Create a notification for this product.
   @backstage backend-defaults Version: < 0.16.1
Version: >= 0.17.0, < 0.17.8
 Create a notification for this product.
Show details on NVD website

To clipboard 

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