EUVD-2026-94012

Backstage: Improper preservation of access restrictions during service credential delegation...

Backstage: Improper input validation in cloud storage URL readers

Impact An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. Patches Patched in @backstage/backend-defaults...

EUVD-2026-94015

Backstage: Improper input validation in cloud storage URL readers...

CVE-2026-106494

A flaw was found in the @backstage/backend-defaults package of Backstage. Improper input validation in cloud storage URL readers allows an attacker with write access to an associated cloud storage bucket to create specially crafted object names. Under certain deployment configurations, these name...

CVE-2026-106492

A flaw was found in @backstage/backend-defaults. The package fails to properly preserve access restrictions during service credential delegation when requests are routed through plugin delegation paths. An authenticated service with limited privileges can exploit this issue to bypass access...

CVE-2026-106492

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions...

CVE-2026-106494

Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that...

CVE-2026-106494

The Backstage framework, specifically the @backstage/backend-defaults package, is vulnerable to improper input validation in cloud storage URL readers prior to version 0.17.8 . An attacker with write access to a cloud storage bucket used by Backstage can craft object names that collide with prote...

CVE-2026-106494 Backstage: Improper input validation in cloud storage URL readers

Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that...

CVE-2026-106494 Backstage: Improper input validation in cloud storage URL readers

Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that...

CVE-2026-106492 Backstage: Improper preservation of access restrictions during service credential delegation

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions...

CVE-2026-106492

The Backstage framework is vulnerable in the @backstage/backend-defaults package prior to versions 0.16.1 and 0.17.8 . The root cause is the improper preservation of access restrictions during service credential delegation. Specifically, an external service credential with restrictions (such as r...

CVE-2026-106492 Backstage: Improper preservation of access restrictions during service credential delegation

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions...

PT-2026-107279

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.17.8 Description The @backstage/backend-defaults package contains improper input validation within cloud storage URL readers. An attacker possessing write access to a cloud storage bucket utilized by the framework...

PT-2026-107277

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.16.1 Backstage versions prior to 0.17.8 Description The @backstage/backend-defaults package fails to properly preserve access restrictions during service credential delegation. An external service credential...

CVE-2026-106492: Improper Privilege Management

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions...

@backstage/backend-dynamic-feature-service (>=0.0.0-nightly-20251218024537, <=0.7.7-next.1), @backstage/backend-test-utils (>=1.10.1-next.0, <=1.10.2-next.1) +14 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (0.14.0-next.1)

@backstage/backend-defaults NPM version 0.14.0-next.1 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/backend-defaults and may be impacted: - @backstage/backend-dynamic-feature-service =0.0.0-nightly-20251218024537, =1.10.1-next.0,...

@backstage/backend-dynamic-feature-service (>=0.0.0-nightly-20251122024148, <=0.7.6-next.1), @backstage/backend-test-utils (>=1.9.1-next.1, <=1.10.0-next.2) +14 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (>=0.13.0-next.0, <=0.13.1-next.1)

@backstage/backend-defaults NPM version =0.13.0-next.0, =0.0.0-nightly-20251122024148, =1.9.1-next.1, =0.4.16-next.0, =0.7.4-next.0, =0.2.14-next.1, =0.7.5-next.0, =0.5.10-next.0, =0.1.4-next.0, =3.0.0-next.0, =0.3.16-next.0, =0.4.15-next.1, =0.3.4-next.1, =2.0.7-next.0, =2.1.1-next.0,...

@backstage/backend-dynamic-feature-service (>=0.0.0-nightly-20251122024148, <=0.7.6-next.1), @backstage/backend-test-utils (>=1.9.1-next.1, <=1.10.0-next.2) +14 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (>=0.13.0-next.0, <=0.13.1-next.1)

@backstage/backend-defaults NPM version =0.13.0-next.0, =0.0.0-nightly-20251122024148, =1.9.1-next.1, =0.4.16-next.0, =0.7.4-next.0, =0.2.14-next.1, =0.7.5-next.0, =0.5.10-next.0, =0.1.4-next.0, =3.0.0-next.0, =0.3.16-next.0, =0.4.15-next.1, =0.3.4-next.1, =2.0.7-next.0, =2.1.1-next.0,...

@backstage/backend-dynamic-feature-service (>=0.0.0-nightly-20251218024537, <=0.7.7-next.1), @backstage/backend-test-utils (>=1.10.1-next.0, <=1.10.2-next.1) +14 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (0.14.0-next.1)

@backstage/backend-defaults NPM version 0.14.0-next.1 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/backend-defaults and may be impacted: - @backstage/backend-dynamic-feature-service =0.0.0-nightly-20251218024537, =1.10.1-next.0,...