{"answers":{"affected":"2 open source packages ship an affected version, including @backstage/plugin-techdocs-node. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106505 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-techdocs-node to 1.15.4 or later.","what":"CVE-2026-106505 is a high-severity code injection vulnerability in Linuxfoundation Backstage, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-106505 and fix it if it is affected.\n\nWhat it is: CVE-2026-106505 is a high-severity code injection vulnerability in Linuxfoundation Backstage, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-106505 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-techdocs-node (npm): affected all versions; fixed in 1.15.4\n- @backstage/plugin-techdocs-node (npm): affected all versions; fixed in 1.15.4\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-106505/ (Markdown: https://insights.sbomify.com/CVE-2026-106505/index.md)","id":"CVE-2026-106505","markdown":"https://insights.sbomify.com/CVE-2026-106505/index.md","name":"CVE-2026-106505","record":{"aliases":["GHSA-p75x-jh7p-ppcx"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Backstage TechDocs plugin","requires_auth":"low_privilege","summary":"Attackers with repository commit access can bypass sanitizers to execute arbitrary code on the TechDocs backend host.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage_plugin-techdocs-node","vendor":"linuxfoundation"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-436","name":"Interpretation Conflict"},{"id":"CWE-426","name":"Untrusted Search Path"}],"description":"Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","id":"CVE-2026-106505","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"code_injection","year":"2026"},"n_packages":2,"n_references":5,"next":{"headline":"Backstage: Improper input validation in scaffolder task list ordering","id":"CVE-2026-106506"},"packages":[{"ecosystem":"npm","fixed":["1.15.4"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":null,"source":"GHSA-p75x-jh7p-ppcx"},{"ecosystem":"npm","fixed":["1.15.4"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","source":"GHSA-p75x-jh7p-ppcx"}],"prev":{"headline":"Backstage: Sensitive information exposure in scaffolder task logs","id":"CVE-2026-106504"},"products":["backstage","plugin-techdocs-node"],"published":"2026-10-06","related":[{"cvss_score":9.6,"headline":"Backstage: Sensitive information exposure in Scaffolder","id":"CVE-2026-106501","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.8,"headline":"Backstage: Improper validation of TechDocs MkDocs configuration","id":"CVE-2026-106558","kev_date_added":null,"published":"2026-10-07"},{"cvss_score":8.8,"headline":"Backstage: Improper input validation in TechDocs MkDocs configuration","id":"CVE-2026-88064","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":8.5,"headline":"Backstage: Improper input validation in Sentry scaffolder actions","id":"CVE-2026-106459","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions","id":"CVE-2026-106486","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Backstage: Improper task state validation in Scaffolder backend","id":"CVE-2026-106500","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Path Traversal in @backstage/plugin-scaffolder-backend","id":"CVE-2021-43783","kev_date_added":null,"published":"2021-11-29"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["@backstage","backstage"]},"summary":"Attackers with repository commit access can bypass sanitizers to execute arbitrary code on the TechDocs backend host.","url":"https://insights.sbomify.com/CVE-2026-106505/"}