{"answers":{"affected":"2 open source packages ship an affected version, including @backstage/plugin-catalog-backend. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106496 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-catalog-backend to 3.9.1 or later.","what":"CVE-2026-106496 is a low-severity path traversal 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-2026-106496 and fix it if it is affected.\n\nWhat it is: CVE-2026-106496 is a low-severity path traversal 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-2026-106496 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-catalog-backend (npm): affected all versions; fixed in 3.9.1\n- @backstage/plugin-catalog-backend (npm): affected all versions; fixed in 3.9.1\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-2026-106496/ (Markdown: https://insights.sbomify.com/CVE-2026-106496/index.md)","id":"CVE-2026-106496","markdown":"https://insights.sbomify.com/CVE-2026-106496/index.md","name":"CVE-2026-106496","record":{"aliases":["GHSA-pcmq-25r3-5w9v"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Backstage catalog backend","requires_auth":"low_privilege","summary":"Attackers can access unintended files on the backend host due to inconsistent enforcement of allowed location types in Backstage catalog processing.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage_plugin-catalog-backend","vendor":"linuxfoundation"}],"cvss":{"score":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"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 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.","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: Inconsistent enforcement of allowed location types during catalog processing","id":"CVE-2026-106496","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: Inconsistent catalog property permission evaluation","id":"CVE-2026-106497"},"packages":[{"ecosystem":"npm","fixed":["3.9.1"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-catalog-backend","purl":null,"source":"GHSA-pcmq-25r3-5w9v"},{"ecosystem":"npm","fixed":["3.9.1"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-catalog-backend","purl":"pkg:npm/%40backstage/plugin-catalog-backend","source":"GHSA-pcmq-25r3-5w9v"}],"prev":{"headline":"Backstage: Improper access control in backend action invocation","id":"CVE-2026-106495"},"products":["backstage","plugin-catalog-backend"],"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 can access unintended files on the backend host due to inconsistent enforcement of allowed location types in Backstage catalog processing.","url":"https://insights.sbomify.com/CVE-2026-106496/"}