How severe is CVE-2026-44374?

CVE-2026-44374 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-44374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44374?

CVE-2026-44374 primarily affects Linuxfoundation Backstage/plugin-catalog-backend-module-unprocessed. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-44374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44374 have an EU (EUVD) identifier?

Yes. CVE-2026-44374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30295.

When was CVE-2026-44374 published?

CVE-2026-44374 was published on 2026-05-14 and last updated on 2026-06-17.

CVE-2026-44374

CVE-2026-44374 is a medium-severity vulnerability in Linuxfoundation Backstage/plugin-catalog-backend-module-unprocessed with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30295
Weakness: CWE-863
Affected product: Linuxfoundation Backstage/plugin-catalog-backend-module-unprocessed
Published: 2026-05-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-44374?: 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.
How severe is CVE-2026-44374?: CVE-2026-44374 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-44374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44374?: CVE-2026-44374 primarily affects Linuxfoundation Backstage/plugin-catalog-backend-module-unprocessed. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-44374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44374 have an EU (EUVD) identifier?: Yes. CVE-2026-44374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30295.
When was CVE-2026-44374 published?: CVE-2026-44374 was published on 2026-05-14 and last updated on 2026-06-17.

References

https://github.com/backstage/backstage/security/advisories/GHSA-p7g9-rp3g-mgfg

Affected products (3)

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:*:*

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