CVE-2026-106493Low· 3.0▾ Sunlit

Backstage is an open framework for building developer portals

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score17/ 100 · Minimal

impact 16.5 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 6, 2026

Updated

Oct 7, 2026

CVSS

3.0

Vendor

backstage

Product

backstage

CWE

CWE-22

Depth score

17 · Minimal

EPSS

0.28% · p20

Platforms

—

Source

NVD

Vector

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

Scores by source

NVD 3.0 · CNA 3.0 · Vendor 2.2

CISA SSVC

decided 2026-10-07

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 8.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 19 days

Oct 6, 2026Published
Disclosed via NVD
Oct 7, 2026Record revised
Last analysed / modified upstream
Oct 8, 2026EPSS first tracked
0.3%
Oct 25, 2026EPSS peak
0.3% → 0.3%

backstage CWE-22 #nvd #cve.org #csaf #vex #red-hat #ghsa #npm

Affected

backstage < 1.54.6
plugin-catalog-backend-module-azure < 0.17.8
plugin-catalog-backend-module-aws < 0.4.27
plugin-catalog-backend-module-azure < 0.3.21

Patched in

@backstage/plugin-catalog-backend-module-azure 0.3.21
@backstage/plugin-catalog-backend-module-aws 0.4.27
@backstage/backend-defaults 0.17.8

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-106493)

Affected packages:

@backstage/plugin-catalog-backend-module-azure < 0.3.21
@backstage/plugin-catalog-backend-module-aws < 0.4.27
@backstage/backend-defaults < 0.17.8

Patched in:

@backstage/plugin-catalog-backend-module-azure 0.3.21
@backstage/plugin-catalog-backend-module-aws 0.4.27
@backstage/backend-defaults 0.17.8

Source: https://github.com/advisories/GHSA-xvh9-35w9-42m4

Vendor advisories

Red Hat VEX · Low · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-07 · vex

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#csaf#vex#red-hat#ghsa#npm

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CVE-2026-106493Low· 3.0▾ Sunlit

Backstage is an open framework for building developer portals

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score17/ 100 · Minimal

impact 16.5 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 6, 2026

Updated

Oct 7, 2026

CVSS

3.0

Vendor

backstage

Product

backstage

CWE

CWE-22

Depth score

17 · Minimal

EPSS

0.28% · p20

Platforms

—

Source

NVD

Vector

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

Scores by source

NVD 3.0 · CNA 3.0 · Vendor 2.2

CISA SSVC

decided 2026-10-07

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 8.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 19 days

Oct 6, 2026Published
Disclosed via NVD
Oct 7, 2026Record revised
Last analysed / modified upstream
Oct 8, 2026EPSS first tracked
0.3%
Oct 25, 2026EPSS peak
0.3% → 0.3%

backstage CWE-22 #nvd #cve.org #csaf #vex #red-hat #ghsa #npm

Affected

backstage < 1.54.6
plugin-catalog-backend-module-azure < 0.17.8
plugin-catalog-backend-module-aws < 0.4.27
plugin-catalog-backend-module-azure < 0.3.21

Patched in

@backstage/plugin-catalog-backend-module-azure 0.3.21
@backstage/plugin-catalog-backend-module-aws 0.4.27
@backstage/backend-defaults 0.17.8

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-106493)

Affected packages:

@backstage/plugin-catalog-backend-module-azure < 0.3.21
@backstage/plugin-catalog-backend-module-aws < 0.4.27
@backstage/backend-defaults < 0.17.8

Patched in:

@backstage/plugin-catalog-backend-module-azure 0.3.21
@backstage/plugin-catalog-backend-module-aws 0.4.27
@backstage/backend-defaults 0.17.8

Source: https://github.com/advisories/GHSA-xvh9-35w9-42m4

Vendor advisories

Red Hat VEX · Low · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-07 · vex

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#csaf#vex#red-hat#ghsa#npm