CVE-2026-106497
mediumBackstage is an open framework for building developer portals.
Vendor / product: Linuxfoundation — backstage plugin-catalog-backend
Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.
CVSS
4.3
4.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-06 22:17
Modified: 2026-10-16 15:26
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linuxfoundation / backstage_plugin-catalog-backend <3.9.1
linuxfoundation / backstage <1.54.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b
Patch / mitigation: https://github.com/backstage/backstage/releases/tag/v1.54.6
Patch / mitigation: https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5
References
- https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b security-advisories@github.com
- https://github.com/backstage/backstage/releases/tag/v1.54.6 security-advisories@github.com
- https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗