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CVE-2026-106493

LOW 3

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

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.

NO EXPLOITATION SIGNALS

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

Exploitation likelihood

0.3%chance of exploitation in 30 days · 20th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

3CVSS 3.1 · LOW

  • ConfidentialityLow
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires an admin / high-privilege account
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ 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 Module Azure Plugin Catalog Backend Module Aws Backstage\/Backend Defaults Backstage\/Plugin Catalog Backend Module Aws Backstage\/Plugin Catalog Backend Module Azure

Weakness (CWE)

  • CWE-22: : Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • @backstage/plugin-catalog-backend-module-azure npm

    pkg:npm/%40backstage/plugin-catalog-backend-module-azure

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 0.3.21
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xvh9-35w9-42m4/GHSA-xvh9-35w9-42m4.json"
  }
}
    GitHub Advisory Database · GHSA-xvh9-35w9-42m4 · Updated 2026-10-07T18:15:11.174792016Z
  • @backstage/plugin-catalog-backend-module-aws npm

    pkg:npm/%40backstage/plugin-catalog-backend-module-aws

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 0.4.27
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xvh9-35w9-42m4/GHSA-xvh9-35w9-42m4.json"
  }
}
    GitHub Advisory Database · GHSA-xvh9-35w9-42m4 · Updated 2026-10-07T18:15:11.174792016Z
  • @backstage/backend-defaults npm

    pkg:npm/%40backstage/backend-defaults

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 0.17.8
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-xvh9-35w9-42m4/GHSA-xvh9-35w9-42m4.json"
  }
}
    GitHub Advisory Database · GHSA-xvh9-35w9-42m4 · Updated 2026-10-07T18:15:11.174792016Z

Vendor product assessments

  • rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend as a component of Red Hat Developer Hub · known affected

    Vendor assessment for this product only.

    pkg:oci/red-hat-developer-hub-backstage-plugin-lightspeed-backend?repository_url=registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend

    • none available: Fix deferred
    Red Hat · CVE-2026-106493 · Updated 2026-10-22T21:20:24+00:00
  • rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend as a component of Red Hat Developer Hub · known affected

    Vendor assessment for this product only.

    pkg:oci/red-hat-developer-hub-backstage-plugin-orchestrator-backend?repository_url=registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend

    • none available: Fix deferred
    Red Hat · CVE-2026-106493 · Updated 2026-10-22T21:20:24+00:00
  • 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

    • none available: Fix deferred
    Red Hat · CVE-2026-106493 · Updated 2026-10-22T21:20:24+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

    • none available: Fix deferred
    Red Hat · CVE-2026-106493 · Updated 2026-10-22T21:20:24+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

    • none available: Fix deferred
    Red Hat · CVE-2026-106493 · Updated 2026-10-22T21:20:24+00:00

Known Affected Software Configurations

VendorProductVersion range
LinuxfoundationBackstage< 1.54.6
LinuxfoundationBackstage\/Backend Defaults< 0.17.8
LinuxfoundationBackstage\/Plugin Catalog Backend Module Aws< 0.4.27
LinuxfoundationBackstage\/Plugin Catalog Backend Module Azure< 0.3.21

All CVSS metrics

  • LOW 3 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
  • LOW 3 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
  • MEDIUM 4.1 v3.1 · NVD Primary
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS