@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,...

EUVD-2026-4136

Backstage has a Possible SSRF when reading from allowed URL's in backend.reading.allow...

Backstage has a Possible SSRF when reading from allowed URL's in `backend.reading.allow`

Impact The FetchUrlReader component, used by the catalog and other plugins to fetch content from URLs, followed HTTP redirects automatically. This allowed an attacker who controls a host listed in backend.reading.allow to redirect requests to internal or sensitive URLs that are not on the...

GHSA-Q2X5-4XJX-C6P9 Backstage has a Possible SSRF when reading from allowed URL's in `backend.reading.allow`

Impact The FetchUrlReader component, used by the catalog and other plugins to fetch content from URLs, followed HTTP redirects automatically. This allowed an attacker who controls a host listed in backend.reading.allow to redirect requests to internal or sensitive URLs that are not on the...

@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,...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.11, <=0.1.12), @alithya-oss/backstage-plugin-aws-apps-backend (>=0.4.5, <=0.4.7) +252 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (>=0.0.0-nightly-20240929023448, <=0.12.1-next.1)

@backstage/backend-defaults NPM version =0.0.0-nightly-20240929023448, =0.1.11, =0.4.5, =1.0.0, =2.0.6, =1.0.7, =0.1.8, =0.3.10, =3.0.5, =0.4.1, =2.0.3, =1.0.4, =0.1.5, =0.3.6, =2.5.0, =0.1.0, =0.1.1 and more Source cves: CVE-2026-24048 Source advisory:...

@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,...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.11, <=0.1.12), @alithya-oss/backstage-plugin-aws-apps-backend (>=0.4.5, <=0.4.7) +252 more potentially affected by CVE-2026-24048 via @backstage/backend-defaults (>=0.0.0-nightly-20240929023448, <=0.12.1-next.1)

@backstage/backend-defaults NPM version =0.0.0-nightly-20240929023448, =0.1.11, =0.4.5, =1.0.0, =2.0.6, =1.0.7, =0.1.8, =0.3.10, =3.0.5, =0.4.1, =2.0.3, =1.0.4, =0.1.5, =0.3.6, =2.5.0, =0.1.0, =0.1.1 and more Source cves: CVE-2026-24048 Source advisory: OSV:GHSA-Q2X5-4XJX-C6P9...

CVE-2026-24047 @backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass

Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is...

CVE-2026-24047

Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is...

CVE-2026-24047 @backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass

Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is...

CVE-2026-24047

CVE-2026-24047 affects Backstage: @backstage/cli-common relies on resolveSafeChildPath in @backstage/backend-plugin-api, which before v0.1.17 failed to validate symlink chains and dangling symlinks. This allowed path traversal via symlink chains (e.g., link1 → link2 → /outside) and dangling symli...

CVE-2026-24047 @backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass

Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is...

@backstage/backend-app-api (>=0.0.0-nightly-20241221023113, <=1.4.0-next.1), @backstage/backend-defaults (>=0.0.0-nightly-20241120023536, <=0.15.0-next.2) +111 more potentially affected by CVE-2026-24047 via @backstage/backend-plugin-api (>=1.0.1, <=1.6.0-next.1)

@backstage/backend-plugin-api NPM version =1.0.1, =0.0.0-nightly-20241221023113, =0.0.0-nightly-20241120023536, =0.0.0-nightly-20241120023536, =0.2.0-next.1, =0.0.0-nightly-20241221023113, =0.0.0-nightly-20241121023535, =0.1.26-next.1, =0.0.0-nightly-20250225023230, =0.3.1-next.1, =0.1.1-next.1,...

@backstage/backend-app-api (>=0.0.0-nightly-20220908030128, <=1.4.0-next.1), @backstage/backend-common (>=0.0.0-nightly-202153022114, <=0.0.0-nightly-20240618021721) +155 more potentially affected by CVE-2026-24047 via @backstage/cli-common (>=0.0.0-nightly-2021612205, <=0.1.16-next.2)

@backstage/cli-common NPM version =0.0.0-nightly-2021612205, =0.0.0-nightly-20220908030128, =0.0.0-nightly-202153022114, =0.0.0-nightly-20220908030128, =0.0.0-nightly-20240116021644, =0.0.0-nightly-20240929023448, =0.0.0-nightly-20220908030128, =0.0.0-nightly-20220908030128,...

@backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass

Impact The resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is used to prevent path traversal attacks, failed to properly validate symlink chains and dangling symlinks. An attacker could bypass the path validation by: 1. Symlink chains: Creating link1 → link2 → /outsi...

UNIX Symbolic Link (Symlink) Following

Overview @backstage/backend-plugin-api is a Core API used by Backstage backend plugins Affected versions of this package are vulnerable to UNIX Symbolic Link Symlink Following in the resolveSafeChildPath function, which relies on resolveRealPath. An attacker can access sensitive files outside the...

Symlink Attack

Overview @backstage/plugin-scaffolder-backend is a The Backstage backend plugin that helps you create new things Affected versions of this package are vulnerable to Symlink Attack via multiple actions, including debug:log, fs:delete, and archive extraction. A user who create and execute Scaffolde...

@alauda/dp-dynamic-plugin-backend-core (>=0.1.11, <=0.1.12), @alithya-oss/backstage-plugin-aws-apps-backend (>=0.4.5, <=0.4.7) +252 more potentially affected by CVE-2026-24046 via @backstage/backend-defaults (>=0.0.0-nightly-20240929023448, <=0.12.1-next.1)

@backstage/backend-defaults NPM version =0.0.0-nightly-20240929023448, =0.1.11, =0.4.5, =1.0.0, =2.0.6, =1.0.7, =0.1.8, =0.3.10, =3.0.5, =0.4.1, =2.0.3, =1.0.4, =0.1.5, =0.3.6, =2.5.0, =0.1.0, =0.1.1 and more Source cves: CVE-2026-24046 Source advisory: OSV:GHSA-RQ6Q-WR2Q-7PGP...