GHSA-p7g9-rp3g-mgfgPublished

Backstage: Catalog unprocessed read endpoints allow authenticated cross-owner data access without permission checks

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-44374

Published

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.

Source published: 14 May 2026 14:30:04 UTC
Source modified: 14 May 2026 19:51:53 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

euvd · EUVD-2026-30295

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 14, 2026, 2:30:04 PM

dateUpdated: May 14, 2026, 7:51:53 PM

Source published: May 14, 2026, 2:30:04 PM (timezone not stated)
Source modified: May 14, 2026, 7:51:53 PM (timezone not stated)
Observed here: 28 Oct 2026 06:07:25 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

nvd · CVE-2026-44374

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-863

Original publisher date fields

published: 2026-05-14T15:16:48.250

lastModified: 2026-10-26T14:10:00.130

3 source CPE criteria · context only

cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-unprocessed:*:*:*:*:*:node.js:*:*
cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-unprocessed-entities:*:*:*:*:*:node.js:*:*
cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-unprocessed-entities-common:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 14 May 2026 15:16:48 UTC
Source modified: 26 Oct 2026 14:10:00 UTC
Observed here: 27 Oct 2026 11:12:09 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

osv · GHSA-p7g9-rp3g-mgfg

Published

### Impact 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. ### Patches 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. Users should upgrade all packages. ### Workarounds If users cannot upgrade, they can remove the `@backstage/plugin-catalog-backend-module-unprocessed` module from their backend until the patch is applied. There is no configuration-based workaround to add permission checks to these endpoints without upgrading.

Source published: 6 May 2026 23:04:07 UTC
Source modified: 14 May 2026 21:03:41 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Publisher rating · MODERATE