{"answers":{"affected":"2 open source packages ship an affected version, including @backstage/plugin-scaffolder-backend-module-confluence-to-markdown. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106559 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-scaffolder-backend-module-confluence-to-markdown to 0.3.25 or later.","what":"CVE-2026-106559 is a medium-severity path traversal vulnerability in Linuxfoundation Backstage, published on 7 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-106559 and fix it if it is affected.\n\nWhat it is: CVE-2026-106559 is a medium-severity path traversal vulnerability in Linuxfoundation Backstage, published on 7 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-106559 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-scaffolder-backend-module-confluence-to-markdown (npm): affected all versions; fixed in 0.3.25\n- @backstage/plugin-scaffolder-backend-module-confluence-to-markdown (npm): affected all versions; fixed in 0.3.25\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-2026-106559/ (Markdown: https://insights.sbomify.com/CVE-2026-106559/index.md)","id":"CVE-2026-106559","markdown":"https://insights.sbomify.com/CVE-2026-106559/index.md","name":"CVE-2026-106559","record":{"aliases":["GHSA-75qf-886x-5xf2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Backstage scaffolder plugin","requires_auth":"low_privilege","summary":"Attackers can manipulate file write operations in Backstage templates by exploiting improper input validation in the Confluence to Markdown module.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-confluence-to-markdown","vendor":"linuxfoundation"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Backstage is an open framework for building developer portals. Prior to 0.3.25, the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package is affected by improper input validation in confluence to markdown scaffolder module. Insufficient input validation in the Confluence to Markdown scaffolder module could allow an attacker to influence file write operations during template execution. Exploitation requires a Backstage user to run a template that processes attacker-influenced Confluence content. This issue is fixed in version 0.3.25.","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: Improper input validation in Confluence to Markdown scaffolder module","id":"CVE-2026-106559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Backstage: Improper repository path validation in a Scaffolder backend module","id":"CVE-2026-106560"},"packages":[{"ecosystem":"npm","fixed":["0.3.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown","purl":null,"source":"GHSA-75qf-886x-5xf2"},{"ecosystem":"npm","fixed":["0.3.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-confluence-to-markdown","source":"GHSA-75qf-886x-5xf2"}],"prev":{"headline":"Backstage: Improper validation of TechDocs MkDocs configuration","id":"CVE-2026-106558"},"products":["backstage","plugin-scaffolder-backend-module-confluence-to-markdown"],"published":"2026-10-07","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 can manipulate file write operations in Backstage templates by exploiting improper input validation in the Confluence to Markdown module.","url":"https://insights.sbomify.com/CVE-2026-106559/"}