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...

@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) +601 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,...

EUVD-2026-93995

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

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...

org.webjars.npm:chainsaw (>=0.0.9, <=0.1.0), org.webjars.npm:github-com-substack-node-chainsaw (0.1.0) potentially affected by CVE-2026-107353 via org.webjars.npm:traverse (0.3.9)

org.webjars.npm:traverse MAVEN version 0.3.9 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:traverse and may be impacted: - org.webjars.npm:chainsaw =0.0.9, =0.1.0 - org.webjars.npm:github-com-substack-node-chainsaw 0.1.0 Source cves:...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.2.3-next.1) +2 more potentially affected by CVE-2026-106510 via @backstage/plugin-techdocs-node (>=1.0.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.0.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.13, =0.0.0-nightly-2021111822616, =1.11.4-next.0 Source cves: CVE-2026-106510 Source advisory: GHSA-4488-J8VJ-VQQV...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.14-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.1.8-next.0) +2 more potentially affected by CVE-2026-106510 via @backstage/plugin-techdocs-node (>=1.0.0, <=1.14.6-next.0)

@backstage/plugin-techdocs-node NPM version =1.0.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.13, =0.0.0-nightly-2021111822616, =1.10.8-next.0 Source cves: CVE-2026-106510 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825498...

Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml

Impact An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. Patches Patched in @backstage/plugin-techdocs-node, version 1.15.4. Workarounds If you cannot upgrade...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.2.3-next.1) +2 more potentially affected by CVE-2026-106510 via @backstage/plugin-techdocs-node (>=1.0.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.0.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.13, =0.0.0-nightly-2021111822616, =1.11.4-next.0 Source cves: CVE-2026-106510 Source advisory: OSV:GHSA-4488-J8VJ-VQQV...

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

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 Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' via...

@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-2026-106510 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-2026-106510 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825498...

Backstage: Improper validation of TechDocs MkDocs configuration

Impact An attacker who can provide configuration to a TechDocs build may execute code in the generator runtime. Impact is greatest when documentation generation runs with backend credentials or host access. Patches Patched in @backstage/plugin-techdocs-node version 1.15.4. Workarounds Use externa...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.14-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.1.8-next.0) +2 more potentially affected by CVE-2026-106558 via @backstage/plugin-techdocs-node (>=1.0.0, <=1.14.6-next.0)

@backstage/plugin-techdocs-node NPM version =1.0.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.13, =0.0.0-nightly-2021111822616, =1.10.8-next.0 Source cves: CVE-2026-106558 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825497...

@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-2026-106558 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-2026-106558 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825497...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.2.3-next.1) +2 more potentially affected by CVE-2026-106558 via @backstage/plugin-techdocs-node (>=1.0.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.0.0, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.13, =0.0.0-nightly-2021111822616, =1.11.4-next.0 Source cves: CVE-2026-106558 Source advisory: GHSA-QMW3-745M-W99G...

@backstage/plugin-search-backend-module-techdocs (0.4.19-next.0), @backstage/plugin-techdocs-backend (2.3.1-next.0) +1 more potentially affected by CVE-2026-106558 via @backstage/plugin-techdocs-node (2.0.1-next.0)

@backstage/plugin-techdocs-node NPM version 2.0.1-next.0 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/plugin-techdocs-node and may be impacted: - @backstage/plugin-search-backend-module-techdocs 0.4.19-next.0 -...

Deserialization of Untrusted Data

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 Deserialization of Untrusted Data in sanitizeMkdocsYml within mkdocsPatchers.ts via malforme...