{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55695","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T00:13:10.650Z","datePublished":"2026-10-13T15:51:02.854Z","dateUpdated":"2026-10-13T16:12:15.791Z"},"containers":{"cna":{"title":"FearlessCMS: Remote Code Execution via Unvalidated Update Repository URL in System Updater","problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/fearlessgeekmedia/FearlessCMS/security/advisories/GHSA-56wm-3q3v-m93m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/fearlessgeekmedia/FearlessCMS/security/advisories/GHSA-56wm-3q3v-m93m"},{"name":"https://github.com/fearlessgeekmedia/FearlessCMS/pull/64","tags":["x_refsource_MISC"],"url":"https://github.com/fearlessgeekmedia/FearlessCMS/pull/64"},{"name":"https://github.com/fearlessgeekmedia/FearlessCMS/commit/6dba91d496463e3940a2c917af3cae97b191de92","tags":["x_refsource_MISC"],"url":"https://github.com/fearlessgeekmedia/FearlessCMS/commit/6dba91d496463e3940a2c917af3cae97b191de92"},{"name":"https://github.com/fearlessgeekmedia/FearlessCMS/releases/tag/0.1.3","tags":["x_refsource_MISC"],"url":"https://github.com/fearlessgeekmedia/FearlessCMS/releases/tag/0.1.3"}],"affected":[{"vendor":"fearlessgeekmedia","product":"FearlessCMS","versions":[{"version":"< 0.1.3b","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-13T15:51:02.854Z"},"descriptions":[{"lang":"en","value":"FearlessCMS is a flat-file content management system centered on simplicity and open source. In 0.1.2b and earlier, an authenticated administrator can set an arbitrary Git repository URL through admin/updater-handler.php and trigger perform_update, which passes the URL to update.sh. The updater clones the repository and replaces the live plugins/, admin/, and includes/ directories without verifying the repository's identity, signatures, or contents. Because router.php permits existing PHP files under plugins to be executed by the PHP development server, attacker-supplied update content can execute arbitrary PHP with the web server process's privileges and persist as a backdoor. This issue is fixed in version 0.1.3b."}],"source":{"advisory":"GHSA-56wm-3q3v-m93m","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/fearlessgeekmedia/FearlessCMS/security/advisories/GHSA-56wm-3q3v-m93m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T16:12:10.331076Z","id":"CVE-2026-55695","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-13T16:12:15.791Z"}}]}}