Medium severity · published May 14, 2026
CVE-2026-44374
Backstage: Catalog unprocessed read endpoints allow authenticated cross-owner data access without permission checks
4.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
plugin-catalog-backend-module-unprocessed · @backstage
< 0.6.11 · source: vendor
PL
plugin-catalog-unprocessed-entities · @backstage
< 0.2.30 · source: vendor
PL
plugin-catalog-unprocessed-entities-common · @backstage
< 0.0.15 · source: vendor
BA
Backstage/plugin-catalog-backend-module-unprocessed · Linuxfoundation
before 0.6.11 · source: NVD
BA
Backstage/plugin-catalog-unprocessed-entities · Linuxfoundation
before 0.2.30 · source: NVD
BA
Backstage/plugin-catalog-unprocessed-entities-common · Linuxfoundation
before 0.0.15 · source: NVD
Affected product
PL
plugin-catalog-backend-module-unprocessed
@backstage