GHSA-Q38J-6VCM-2F5M Backstage: Improper validation of MkDocs plugin configuration in TechDocs

Impact An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260822023239, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-20260827035829, <=2.2.3-next.1) +1 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=1.15.1-next.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.15.1-next.0, =0.0.0-nightly-20260822023239, =0.0.0-nightly-20260827035829, =0.0.0-nightly-20260823023807, =1.11.4-next.0 Source cves: CVE-2026-106455 Source advisory: GHSA-Q38J-6VCM-2F5M...

Server-side Request Forgery (SSRF)

Overview @backstage/plugin-techdocs-node is a Common node.js functionalities for TechDocs, to be shared between techdocs-backend plugin and techdocs-cli Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via unsanitized MkDocs plugin entries in mkdocs.yml during...

Backstage: Inconsistent credential enforcement for overlapping proxy routes

Impact An operator can configure overlapping proxy paths with different credential requirements. When a parent path permits unauthenticated access and a nested path requires credentials, the parent exemption can also cover requests handled by the nested proxy. An unauthenticated caller may...

EUVD-2026-93989

Backstage: Inconsistent credential enforcement for overlapping proxy routes...

GHSA-472H-9C5J-PRRR Backstage: Inconsistent credential enforcement for overlapping proxy routes

Impact An operator can configure overlapping proxy paths with different credential requirements. When a parent path permits unauthenticated access and a nested path requires credentials, the parent exemption can also cover requests handled by the nested proxy. An unauthenticated caller may...

Incorrect Authorization

Overview @backstage/plugin-proxy-backend is an A Backstage backend plugin that helps you set up proxy endpoints in the backend Affected versions of this package are vulnerable to Incorrect Authorization via inconsistent application of route credentials in the proxy router...

EUVD-2026-93992

Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the getLocationEntity method and the event-driven update path in BitbucketServerEntityProvider.ts, where repository filters projectKey, repoSlug, and skipArchivedRepos configured by an administrator are appli...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the apiBaseUrl input parameter in the createSentryCreateProjectAction and fetchDSN scaffolder actions, which previously accepted an arbitrary caller-supplied URL without validating it against the...

EUVD-2026-93993

Backstage: Improper input validation in Sentry scaffolder actions...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.7, <=0.1.12), @alexandreamormino/plugin-entity-manager-backend (>=1.0.1, <=1.0.4) +602 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.4.17, <=0.6.15-next.0)

@backstage/plugin-auth-node NPM version =0.4.17, =0.1.7, =1.0.1, =0.4.5, =0.4.5, =0.5.5, =0.5.5, =0.3.10, =1.1.5, =1.0.0, =0.1.8, =2.0.6, =1.0.7, =1.1.8, =0.1.8, =0.2.8, =0.2.10 and more Source cves: CVE-2026-106460 Source advisory:...

GHSA-XM5Q-P7W3-X6CP Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization

Impact Several Passport-based authentication providers use shared OAuth profile normalization from @backstage/plugin-auth-node. Affected versions may pass an email to email-based sign-in resolvers even when verification metadata supplied for that same address is explicitly negative. The...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.7, <=0.1.12), @alexandreamormino/plugin-entity-manager-backend (>=1.0.1, <=1.0.4) +602 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.4.17, <=0.6.15-next.0)

@backstage/plugin-auth-node NPM version =0.4.17, =0.1.7, =1.0.1, =0.4.5, =0.4.5, =0.5.5, =0.5.5, =0.3.10, =1.1.5, =1.0.0, =0.1.8, =2.0.6, =1.0.7, =1.1.8, =0.1.8, =0.2.8, =0.2.10 and more Source cves: CVE-2026-106460 Source advisory:...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via PassportHelpers.ts in the makeProfileInfo function, which fails to check the verified flag on OAuth profile emails and the emailverified claim in ID tokens before accepting them as...

@backstage/backend-app-api (>=1.7.0-next.0, <=1.7.4-next.1), @backstage/backend-defaults (>=0.0.0-nightly-20260415031804, <=0.17.9-next.1) +113 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.7.0, <=0.7.5-next.1)

@backstage/plugin-auth-node NPM version =0.7.0, =1.7.0-next.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-20260415031804, =0.6.9-next.0, =1.9.1-next.0, =0.0.0-nightly-20260415031804, =0.0.0, =0.5.14-next.0, =0.1.45-next.0, =0.0.0-nightly-20260415031804, =0.4.15-next.0, =0.4.1-next.0,...

@backstage/backend-app-api (>=1.7.0-next.0, <=1.7.4-next.1), @backstage/backend-defaults (>=0.0.0-nightly-20260415031804, <=0.17.9-next.1) +113 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.7.0, <=0.7.5-next.1)

@backstage/plugin-auth-node NPM version =0.7.0, =1.7.0-next.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-20260415031804, =0.6.9-next.0, =1.9.1-next.0, =0.0.0-nightly-20260415031804, =0.0.0, =0.5.14-next.0, =0.1.45-next.0, =0.0.0-nightly-20260415031804, =0.4.15-next.0, =0.4.1-next.0,...

EUVD-2026-93995

Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization...

@backstage/backend-app-api (>=1.7.0-next.0, <=1.7.4-next.1), @backstage/backend-defaults (>=0.0.0-nightly-20260415031804, <=0.17.9-next.1) +113 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.7.0, <=0.7.5-next.1)

@backstage/plugin-auth-node NPM version =0.7.0, =1.7.0-next.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-20260415031804, =0.6.9-next.0, =1.9.1-next.0, =0.0.0-nightly-20260415031804, =0.0.0, =0.5.14-next.0, =0.1.45-next.0, =0.0.0-nightly-20260415031804, =0.4.15-next.0, =0.4.1-next.0,...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.7, <=0.1.12), @alexandreamormino/plugin-entity-manager-backend (>=1.0.1, <=1.0.4) +602 more potentially affected by CVE-2026-106460 via @backstage/plugin-auth-node (>=0.4.17, <=0.6.15-next.0)

@backstage/plugin-auth-node NPM version =0.4.17, =0.1.7, =1.0.1, =0.4.5, =0.4.5, =0.5.5, =0.5.5, =0.3.10, =1.1.5, =1.0.0, =0.1.8, =2.0.6, =1.0.7, =1.1.8, =0.1.8, =0.2.8, =0.2.10 and more Source cves: CVE-2026-106460 Source advisory:...