{"answers":{"affected":"4 open source packages ship an affected version, including @backstage/plugin-techdocs-node. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106455 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-techdocs-node to a fixed version for your release line: 1.14.7 or 1.15.5.","what":"CVE-2026-106455 is a high-severity server-side request forgery 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-2026-106455 and fix it if it is affected.\n\nWhat it is: CVE-2026-106455 is a high-severity server-side request forgery 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-2026-106455 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-techdocs-node (npm): affected from 0.11.12; fixed in 1.14.7\n- @backstage/plugin-techdocs-node (npm): affected from 0.11.12; fixed in 1.14.7\n- @backstage/plugin-techdocs-node (npm): affected from 1.15.0; fixed in 1.15.5\n- @backstage/plugin-techdocs-node (npm): affected from 1.15.0; fixed in 1.15.5\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-2026-106455/ (Markdown: https://insights.sbomify.com/CVE-2026-106455/index.md)","id":"CVE-2026-106455","markdown":"https://insights.sbomify.com/CVE-2026-106455/index.md","name":"CVE-2026-106455","record":{"aliases":["GHSA-q38j-6vcm-2f5m"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Backstage TechDocs plugin","requires_auth":"low_privilege","summary":"An authenticated attacker can exploit improper validation in Backstage TechDocs to perform Server-Side Request Forgery and read data from internal network locations.","user_interaction":"not_required","vuln_class":"ssrf"},"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:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Backstage is an open framework for building developer portals. From 0.11.12 until 1.14.7 and 1.15.5, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.","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 validation of MkDocs plugin configuration in TechDocs","id":"CVE-2026-106455","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"ssrf","year":"2026"},"n_packages":4,"n_references":6,"next":{"headline":"Backstage: Inconsistent credential enforcement for overlapping proxy routes","id":"CVE-2026-106456"},"packages":[{"ecosystem":"npm","fixed":["1.14.7"],"introduced":["0.11.12"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":null,"source":"GHSA-q38j-6vcm-2f5m"},{"ecosystem":"npm","fixed":["1.14.7"],"introduced":["0.11.12"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","source":"GHSA-q38j-6vcm-2f5m"},{"ecosystem":"npm","fixed":["1.15.5"],"introduced":["1.15.0"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":null,"source":"GHSA-q38j-6vcm-2f5m"},{"ecosystem":"npm","fixed":["1.15.5"],"introduced":["1.15.0"],"last_affected":[],"package":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","source":"GHSA-q38j-6vcm-2f5m"}],"prev":{"headline":"Twisted: IMAP wildcardToRegexp() ReDoS","id":"CVE-2026-106454"},"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":"2026-10-09","vendors":["@backstage","backstage"]},"summary":"An authenticated attacker can exploit improper validation in Backstage TechDocs to perform Server-Side Request Forgery and read data from internal network locations.","url":"https://insights.sbomify.com/CVE-2026-106455/"}