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No exploitation reportedFix available

CVE-2026-106493

Backstage: Cloud storage catalog locations may cross configured storage boundaries

No exploitation reported by the sources we read.

  • Published2026-10-06
  • Fixed in1.54.6
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-10-0621:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-106493?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-106493?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Linuxfoundation backstage
BranchAffectedFixed in
1.54< 1.54.61.54.6
Linuxfoundation backstage\/backend-defaults
BranchAffectedFixed in
0.17< 0.17.80.17.8
Linuxfoundation backstage\/plugin-catalog-backend-module-aws
BranchAffectedFixed in
0.4< 0.4.270.4.27

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-106493 Red Hat Product Security5 known affected

    backstage: Backstage: Information disclosure via improper object path validation in cloud storage catalog providers

    rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend as a component of Red Hat Developer Hub · rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend as a component of Red Hat Developer Hub · rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub · +2 more

Full record on NVD

Fix

  1. Update Linuxfoundation backstage to 1.54.6
  2. No fix available, says the vendor Red Hat Product Security CVE-2026-106493 · 5 productsFix deferred

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2026-10-07
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.13read 2026-10-23
  • NVDCVSS 3.14.1read 2026-10-23
  • CNAweakness (CWE)CWE-22read 2026-10-23
  • FIRST EPSSEPSS score0.3 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
Published
2026-10-06
Last Modified
2026-10-22
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-106493?

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.

Is CVE-2026-106493 actively exploited?

Active exploitation of CVE-2026-106493 has not been confirmed. Its EPSS score was 0.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-106493?

CVE-2026-106493 has a CVSS v3 base score of 4.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.

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