CVE-2026-24046: Improper Limitation of a Pathname to a Restricted Directory

Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files vi...

@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) +55 more potentially affected by CVE-2025-55285 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=1.33.0)

@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-2025-55285

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Prior to version 2.1.1, duplicate logging of the input values in the fetch:template action in the Scaffolder meant that some of the secrets were not properly redacted. If $ secrets.x is not passed...

CVE-2025-55285: Insertion of Sensitive Information into Log File

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Prior to version 2.1.1, duplicate logging of the input values in the fetch:template action in the Scaffolder meant that some of the secrets were not properly redacted. If $ secrets.x is not passed...

@backstage/plugin-scaffolder-backend (0.0.0-nightly-20241017023338) potentially affected by CVE-2024-53983 via @backstage/plugin-scaffolder-node (0.5.0)

@backstage/plugin-scaffolder-node NPM version 0.5.0 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/plugin-scaffolder-node and may be impacted: - @backstage/plugin-scaffolder-backend 0.0.0-nightly-20241017023338 Source cves: CVE-2024-53983...

Arbitrary Code Injection

@backstage/plugin-scaffolder-backend is vulnerable to Arbitrary Code Injection. The vulnerability exists due to sandbox bypass in ScaffolderEntitiesProcessor.js, which allows an attacker with write access to a registered scaffolder template to inject code through the YAML template definition...

CVE-2023-35926

Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been vm2, but in light of several past vulnerabilities and...

CVE-2023-35926

Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been "vm2", but in light of several past vulnerabilities a...

@backstage/plugin-scaffolder-backend (>=0.0.0-nightly-202110122318, <=0.15.24-next.0), @backstage/plugin-scaffolder-backend-module-confluence-to-markdown (>=0.0.0-nightly-20230325022054, <=0.0.0-nightly-20230801022410) +9 more potentially affected by CVE-2023-35926 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=1.1.0)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =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, =0.1.0, =1.0.8, =1.0.0, =1.0.0, =2.2...

@frontside/backstage-plugin-humanitec-backend (>=0.1.0, <=0.2.1-changeset-release-main.1) potentially affected by CVE-2023-35926 via @backstage/plugin-scaffolder-backend (1.1.0)

@backstage/plugin-scaffolder-backend NPM version 1.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/plugin-scaffolder-backend and may be impacted: - @frontside/backstage-plugin-humanitec-backend =0.1.0, =0.2.1-changeset-release-main.1...

@frontside/backstage-plugin-humanitec-backend (>=0.1.0, <=0.2.1-changeset-release-main.1) potentially affected by CVE-2023-35926 via @backstage/plugin-scaffolder-backend (1.1.0)

@backstage/plugin-scaffolder-backend NPM version 1.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on @backstage/plugin-scaffolder-backend and may be impacted: - @frontside/backstage-plugin-humanitec-backend =0.1.0, =0.2.1-changeset-release-main.1...

@backstage/plugin-scaffolder-backend-module-confluence-to-markdown (>=0.0.0-nightly-20230325022054, <=0.0.0-nightly-20230801022410), @backstage/plugin-scaffolder-backend-module-cookiecutter (>=0.0.0-nightly-2021101022158, <=0.1.0) +3 more potentially affected by unknown CVE via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=0.14.2)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =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, =0.0.0-nightly-20230123022600 Source cves: unknown CVE Source...

RCE vulnerability affecting v1beta3 templates in @backstage/plugin-scaffolder-backend

The templating library used by the scaffolder backend assumes that templates are trusted which is an undesired property of the scaffolder-backend. This has now been mitigated by sandboxing the template code execution. Impact A malicious actor with write access to a registered scaffolder template...

@backstage/plugin-scaffolder-backend-module-confluence-to-markdown (>=0.0.0-nightly-20230325022054, <=0.0.0-nightly-20230801022410), @backstage/plugin-scaffolder-backend-module-cookiecutter (>=0.0.0-nightly-2021101022158, <=0.1.0) +3 more potentially affected by unknown CVE via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=0.14.2)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =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, =0.0.0-nightly-20230123022600 Source cves: unknown CVE Source...

Path Traversal in @backstage/plugin-scaffolder-backend

Impact A malicious actor with write access to a registered scaffolder template is able to manipulate the template in a way that writes files to arbitrary paths on the scaffolder-backend host instance. This vulnerability can in some situation also be exploited through user input when executing a...

@backstage/plugin-scaffolder-backend-module-confluence-to-markdown (>=0.0.0-nightly-20230325022054, <=0.0.0-nightly-20230801022410), @backstage/plugin-scaffolder-backend-module-cookiecutter (>=0.0.0-nightly-2021101022158, <=0.1.0) +3 more potentially affected by CVE-2021-43783 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=0.14.2)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =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, =0.0.0-nightly-20230123022600 Source cves: CVE-2021-43783 Source...

PT-2021-24370

Name of the Vulnerable Software and Affected Versions: @backstage/plugin-scaffolder-backend versions prior to 0.15.14 Description: The templating library used by the scaffolder backend has an issue where it assumes templates are trusted, allowing for potential remote code execution. A malicious...

CVE-2021-43783 Path Traversal in @backstage/plugin-scaffolder-backend

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. In affected versions a malicious actor with write access to a registered scaffolder template is able to manipulate the template in a way that writes files to arbitrary paths on the scaffolder-backend...

CVE-2021-43783

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. In affected versions a malicious actor with write access to a registered scaffolder template is able to manipulate the template in a way that writes files to arbitrary paths on the scaffolder-backend...

@backstage/plugin-scaffolder-backend-module-confluence-to-markdown (>=0.0.0-nightly-20230325022054, <=0.0.0-nightly-20230801022410), @backstage/plugin-scaffolder-backend-module-cookiecutter (>=0.0.0-nightly-2021101022158, <=0.1.0) +3 more potentially affected by CVE-2021-43783 via @backstage/plugin-scaffolder-backend (>=0.0.0-nightly-20220708025041, <=0.14.2)

@backstage/plugin-scaffolder-backend NPM version =0.0.0-nightly-20220708025041, =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, =0.0.0-nightly-20230123022600 Source cves: CVE-2021-43783 Source...