CVE-2026-44374 json
Backstage: Catalog unprocessed read endpoints allow authenticated cross-owner data access without permission checks
published 2026-05-06 6 mo ago modified 2026-10-26 14 d ago also GHSA-p7g9-rp3g-mgfg , EUVD-2026-30295
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
Backstage is an open framework for building developer portals. Prior to 0.6.11, the unprocessed entities read endpoints in @backstage/plugin-catalog-backend-module-unprocessed do not enforce permission authorization checks. Any authenticated user can access unprocessed entity records regardless of ownership. This is an information disclosure vulnerability affecting Backstage installations using this module. This is patched in @backstage/plugin-catalog-backend-module-unprocessed version 0.6.11, @backstage/plugin-catalog-unprocessed-entities-common version 0.0.15 and @backstage/plugin-catalog-unprocessed-entities version 0.2.30.
Patch / fix
- npm @backstage/plugin-catalog-unprocessed-entities-common 0.0.15
- npm @backstage/plugin-catalog-unprocessed-entities 0.2.30
- npm @backstage/plugin-catalog-backend-module-unprocessed 0.6.11
- linuxfoundation backstage/plugin-catalog-backend-module-unprocessed 0.6.11
- linuxfoundation backstage/plugin-catalog-unprocessed-entities 0.2.30
- linuxfoundation backstage/plugin-catalog-unprocessed-entities-common 0.0.15
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-44374 updated cvss 4.3
Backstage: @backstage/plugin-catalog-backend-module-unprocessed: @backstage/plugin-catalog-unprocessed-entities-common: @backstage/plugin-catalog-unprocessed-entities: Backstage: Information disclosur
-
Red Hat Developer Hub 1 rhdh/rhdh-hub-rhel9not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @backstage/plugin-catalog-unprocessed-entities-common | <0.0.15 |
0.0.15 |
| npm | @backstage/plugin-catalog-unprocessed-entities | <0.2.30 |
0.2.30 |
| npm | @backstage/plugin-catalog-backend-module-unprocessed | <0.6.11 |
0.6.11 |
Affected products
- @backstage plugin-catalog-backend-module-unprocessed
- @backstage plugin-catalog-unprocessed-entities
- @backstage plugin-catalog-unprocessed-entities-common
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/backstage/backstage/security/advisories/GHSA-p7g9-rp3g-mgfg
web, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44374
advisory
-
github.com
/backstage/backstage
package
Sources
- CVE List CVE-2026-44374
- GitHub Advisory GHSA-p7g9-rp3g-mgfg
- NVD CVE-2026-44374
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.