{"answers":{"affected":"2 open source packages ship an affected version, including @backstage/plugin-catalog-backend-module-bitbucket-server. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106458 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-catalog-backend-module-bitbucket-server to 0.5.15 or later.","what":"CVE-2026-106458 is a medium-severity missing authorization 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-2026-106458 and fix it if it is affected.\n\nWhat it is: CVE-2026-106458 is a medium-severity missing authorization 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-2026-106458 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-catalog-backend-module-bitbucket-server (npm): affected from 0.4.0; fixed in 0.5.15\n- @backstage/plugin-catalog-backend-module-bitbucket-server (npm): affected from 0.4.0; fixed in 0.5.15\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-2026-106458/ (Markdown: https://insights.sbomify.com/CVE-2026-106458/index.md)","id":"CVE-2026-106458","markdown":"https://insights.sbomify.com/CVE-2026-106458/index.md","name":"CVE-2026-106458","record":{"aliases":["GHSA-c36c-cf6r-ghgj"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"Backstage catalog plugin","requires_auth":"low_privilege","summary":"Authenticated users can inject unauthorized repository locations into Backstage catalogs by exploiting inconsistent filtering in event-driven updates.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-catalog-backend-module-bitbucket-server","vendor":"linuxfoundation"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the Bitbucket Server catalog provider may ingest catalog locations from repositories that are excluded by the provider's configured project, repository, or archived-repository filters. An authenticated Bitbucket Server user who can push to a filtered-out repository that remains readable by the configured Backstage integration can trigger a legitimate repository event. The affected event path may then add a Location for that repository even though scheduled discovery excludes it. This issue is fixed in version 0.5.15.","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 repository filtering in Bitbucket Server catalog event updates","id":"CVE-2026-106458","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"missing_authorization","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Backstage: Improper input validation in Sentry scaffolder actions","id":"CVE-2026-106459"},"packages":[{"ecosystem":"npm","fixed":["0.5.15"],"introduced":["0.4.0"],"last_affected":[],"package":"@backstage/plugin-catalog-backend-module-bitbucket-server","purl":null,"source":"GHSA-c36c-cf6r-ghgj"},{"ecosystem":"npm","fixed":["0.5.15"],"introduced":["0.4.0"],"last_affected":[],"package":"@backstage/plugin-catalog-backend-module-bitbucket-server","purl":"pkg:npm/%40backstage/plugin-catalog-backend-module-bitbucket-server","source":"GHSA-c36c-cf6r-ghgj"}],"prev":{"headline":"Backstage: Insufficient audience validation in the Cloudflare Access auth provider","id":"CVE-2026-106457"},"products":["backstage","plugin-catalog-backend-module-bitbucket-server"],"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":"Authenticated users can inject unauthorized repository locations into Backstage catalogs by exploiting inconsistent filtering in event-driven updates.","url":"https://insights.sbomify.com/CVE-2026-106458/"}