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CVE-2026-106497

MEDIUM 4.3

Published 2026-10-06 · Last modified 2026-10-07

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.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 9th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

4.3CVSS 3.1 · MEDIUM

  • ConfidentialityLow
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Backstage @Backstage Linuxfoundation

Products Backstage Plugin Catalog Backend Backstage Plugin Catalog Backend

Weakness (CWE)

  • CWE-178: : Improper Handling of Case Sensitivity
  • CWE-863: : Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References and research data (JSON)

Vendor product assessments

  • rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub · known affected

    Vendor assessment for this product only.

    pkg:oci/rhdh-hub-rhel9?repository_url=registry.redhat.io/rhdh/rhdh-hub-rhel9

    • workaround: To mitigate this avoid using value-based catalog permission conditions as a strict confidentiality boundary for sensitive data. Instead, restructure your policies to use explicit, fine-grained permission scoping that does not rely on potentially inconsistent property evaluation.
    • none available: Fix deferred
    Red Hat · CVE-2026-106497 · Updated 2026-10-07T17:36:22+00:00
  • ansible-automation-platform/automation-portal as a component of Self-service automation portal 2 · known affected

    Vendor assessment for this product only.

    pkg:oci/automation-portal?repository_url=registry.redhat.io/ansible-automation-platform/automation-portal

    • workaround: To mitigate this avoid using value-based catalog permission conditions as a strict confidentiality boundary for sensitive data. Instead, restructure your policies to use explicit, fine-grained permission scoping that does not rely on potentially inconsistent property evaluation.
    • none available: Fix deferred
    Red Hat · CVE-2026-106497 · Updated 2026-10-07T17:36:22+00:00
  • ansible-automation-platform/bootc-automation-portal-rhel9 as a component of Self-service automation portal 2 · known affected

    Vendor assessment for this product only.

    pkg:oci/bootc-automation-portal-rhel9?repository_url=registry.redhat.io/ansible-automation-platform/bootc-automation-portal-rhel9

    • workaround: To mitigate this avoid using value-based catalog permission conditions as a strict confidentiality boundary for sensitive data. Instead, restructure your policies to use explicit, fine-grained permission scoping that does not rely on potentially inconsistent property evaluation.
    • none available: Fix deferred
    Red Hat · CVE-2026-106497 · Updated 2026-10-07T17:36:22+00:00

Known Affected Software Configurations

VendorProductVersion range
LinuxfoundationBackstage Plugin Catalog Backend< 3.9.1
LinuxfoundationBackstage< 1.54.6

All CVSS metrics

  • MEDIUM 4.3 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • MEDIUM 4.3 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS