CVE-2026-106500

The Backstage framework, specifically the @backstage/plugin-scaffolder-backend package, is vulnerable to improper task state validation in its scaffolder backend. An authenticated user with permissions to create and access Scaffolder tasks may, under specific timing and deployment conditions, aff...

CVE-2026-106500

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks...

@alithya-oss/backstage-plugin-scaffolder-backend-module-aws-apps (>=0.3.10, <=0.3.12), @alithya-oss/plugin-scaffolder-backend-module-aws-apps (>=0.3.6, <=0.3.9) +56 more potentially affected by CVE-2026-106500 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=3.4.1)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =0.3.10, =0.3.6, =0.1.0, =0.4.0, =0.0.0-nightly-202110122318, =0.0.0-nightly-20230325022054, =0.0.0-nightly-2021101022158, =0.0.0-nightly-2021101022158, =0.0.0-nightly-20230112022659, =0.0.0-nightly-2021101022158,...

CVE-2026-106500 Backstage: Improper task state validation in Scaffolder backend

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks...

CVE-2026-106499 Backstage: Secret-derived values may be exposed in scaffolder task logs

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or...

@alithya-oss/backstage-plugin-scaffolder-backend-module-aws-apps (>=0.3.10, <=0.3.12), @alithya-oss/plugin-scaffolder-backend-module-aws-apps (>=0.3.6, <=0.3.9) +56 more potentially affected by CVE-2026-106499 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=3.4.1)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =0.3.10, =0.3.6, =0.1.0, =0.4.0, =0.0.0-nightly-202110122318, =0.0.0-nightly-20230325022054, =0.0.0-nightly-2021101022158, =0.0.0-nightly-2021101022158, =0.0.0-nightly-20230112022659, =0.0.0-nightly-2021101022158,...

CVE-2026-106499

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or...

CVE-2026-106499

The Backstage framework, specifically the @backstage/plugin-scaffolder-backend package, is vulnerable in versions prior to 4.1.0 . The issue allows secret-derived values to be exposed in Scaffolder task logs when deployments configure sensitive scaffolder.defaultEnvironment.secrets and permit una...

CVE-2026-106499 Backstage: Secret-derived values may be exposed in scaffolder task logs

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or...

CVE-2026-106499 Backstage: Secret-derived values may be exposed in scaffolder task logs

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or...

CVE-2026-106498

The Backstage framework (prior to versions 3.5.1, 3.6.2, 3.7.2, 3.8.2, and 3.9.1) is vulnerable in the @backstage/plugin-catalog-backend package due to improper url validation during catalog entity placeholder resolution. An authenticated user can craft a catalog entity with placeholder directive...

CVE-2026-106498 Backstage: Improper URL validation in catalog entity placeholder resolution

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity...

CVE-2026-106498

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity...

CVE-2026-106498 Backstage: Improper URL validation in catalog entity placeholder resolution

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity...

CVE-2026-106498 Backstage: Improper URL validation in catalog entity placeholder resolution

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity...

@aws/aws-config-catalog-module-for-backstage (>=0.1.0, <=0.2.0), @backstage-community/backstage-plugin-catalog-backend-module-mta-entity-provider (0.3.0) +57 more potentially affected by CVE-2026-106498 via @backstage/plugin-catalog-backend (>=0.0.0-nightly-20220708025041, <=3.9.0)

@backstage/plugin-catalog-backend NPM version =0.0.0-nightly-20220708025041, =0.1.0, =0.4.0, =1.7.4, =1.0.3, =0.0.0-nightly-20240116021644, =0.0.0-nightly-20220219022334, =0.0.0-nightly-20220308022132, =0.0.0-nightly-20220311022539, =0.0.0-nightly-20220531024457, =0.0.0-nightly-20220810023539,...

CVE-2026-106497 Backstage: Inconsistent catalog property permission evaluation

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary...

EUVD-2026-94054

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary...

CVE-2026-106497 Backstage: Inconsistent catalog property permission evaluation

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary...

@backstage/backend-dynamic-feature-service (>=0.0.0-nightly-20251122024148, <=0.8.7-next.0), @backstage/plugin-catalog-backend-module-github (>=0.10.2-next.0, <=0.11.1-next.1) +4 more potentially affected by CVE-2026-106497 via @backstage/plugin-catalog-backend (>=3.0.1-next.0, <=3.9.0)

@backstage/plugin-catalog-backend NPM version =3.0.1-next.0, =0.0.0-nightly-20251122024148, =0.10.2-next.0, =0.3.13-next.0, =0.0.0-nightly-20251123025211, =0.1.13-next.0, =0.1.0-next.0, =0.1.3-next.0 Source cves: CVE-2026-106497 Source advisory: MEND:CVE-2026-106497...