{"id":"CVE-2026-106508","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106508","generatedAt":"2026-10-28T06:34:58.531Z","title":"Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by potential file exposure through local techdocs publisher.","description":"Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by potential file exposure through local techdocs publisher. When using the local TechDocs publisher (techdocs.publisher.type: 'local'), it was possible for the documentation serving endpoint to follow filesystem references outside the intended documentation tree, potentially exposing host files to authenticated users. This is mitigated by the fact that exploration requires preconditions that do not arise through normal MkDocs operation. Cloud-based publishers (S3, GCS, Azure Blob Storage) are not affected. This issue is fixed in version 1.15.4.","published":"2026-10-06T22:17:06.000Z","lastModified":"2026-10-09T17:44:55.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-22","CWE-59"],"affected":["linuxfoundation/backstage plugin-techdocs-node","linuxfoundation/backstage"],"epss":{"score":0.00389,"percentile":0.32861,"date":"2026-10-27","history":[{"date":"2026-10-07","score":0.00283,"percentile":0.19021}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-09T19:00:22.000Z","detail":{"from":"5.3","score":"6.5","severity":"MEDIUM","fromSeverity":"MEDIUM"},"summary":"Now scored CVSS 6.5 MEDIUM (was 5.3)."},{"kind":"new","label":"New CVE","at":"2026-10-06T22:17:06.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-06T22:17:06.310Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/backstage/backstage/commit/6aecb26f337ffec1d4e67ce903cf1e39b6082ec4","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-cm77-ch27-6w6v","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106508","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}