{"schema":"threatline.record/2","record":{"id":"CVE-2026-114624","aliases":["GHSA-xf6p-r2hc-cc6w"],"summary":"baserCMS: PHP object injection via unguarded unserialize() in the widget-area entity","details":"baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, the widget-area entity serializes widgets only when the submitted value is an array, allowing a string submitted through the admin JSON API to be stored unchanged. Entity reads, including front-end rendering and API responses, deserialize the stored value with unserialize() without an allowed_classes restriction, accepting both raw and base64-encoded serialized data. An administrator, or an attacker who obtains widget-write capability through a separate vulnerability such as chained XSS, can plant an object graph that subsequently triggers on unauthenticated page requests. Two demonstrated gadget chains in the default dependency set use composer/composer ProcessExecutor::startJob() with Process::fromShellCommandline(), or logiscape/mcp-sdk-php StdioTransport::connect() with StdioServerParameters, to reach proc_open() and execute commands as the web-server user. Deserialization bypasses constructor-based readonly safeguards, and the stored payload can execute repeatedly until the database row is repaired. Unauthenticated page access is a trigger after privileged payload storage, not an unauthenticated means of initially planting the payload. This issue has been patched in versions 5.3.2 and 5.4.2.","categories":["Unclassified"],"product":"basercms","vendor":"baserproject","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114624","source_modified_at":"2026-10-23T13:47:08.832Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"basercms","vendor":"baserproject","versions":[{"status":"affected","version":">= 5.0.0, < 5.3.2"},{"status":"affected","version":">= 5.4.0, < 5.4.2"}],"defaultStatus":null}],"fixed_versions":[],"cvss":7.2,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00922,"percentile":0.60016,"score_date":"2026-10-24"},"published_at":"2026-10-23T13:47:08.832Z","modified_at":"2026-10-23T13:47:08.832Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-114624","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T13:47:08.832Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114624","fetched_at":"2026-10-24T18:03:20.872036Z","source_modified_at":"2026-10-24"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/baserproject/basercms/security/advisories/GHSA-xf6p-r2hc-cc6w","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/commit/38c778e92688e7f5d620a4c6b47ad7fb9e2c1529","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/commit/59dfe61e193ae3274c195c15e7b185816d2db9db","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/releases/tag/5.3.2","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/releases/tag/5.4.2","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T13:47:08.832Z","content_hash":"4002cfe2812c972d63fa1406a60db71bf6a67976c050baa52eb4163eecf6a7c4"}}