{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-114624","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-21T20:34:25.600Z","datePublished":"2026-10-23T13:47:08.832Z","dateUpdated":"2026-10-29T13:37:07.749Z"},"containers":{"cna":{"title":"baserCMS: PHP object injection via unguarded unserialize() in the widget-area entity","problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/baserproject/basercms/security/advisories/GHSA-xf6p-r2hc-cc6w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-xf6p-r2hc-cc6w"},{"name":"https://github.com/baserproject/basercms/commit/38c778e92688e7f5d620a4c6b47ad7fb9e2c1529","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/commit/38c778e92688e7f5d620a4c6b47ad7fb9e2c1529"},{"name":"https://github.com/baserproject/basercms/commit/59dfe61e193ae3274c195c15e7b185816d2db9db","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/commit/59dfe61e193ae3274c195c15e7b185816d2db9db"},{"name":"https://github.com/baserproject/basercms/releases/tag/5.3.2","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/releases/tag/5.3.2"},{"name":"https://github.com/baserproject/basercms/releases/tag/5.4.2","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/releases/tag/5.4.2"}],"affected":[{"vendor":"baserproject","product":"basercms","versions":[{"version":">= 5.0.0, < 5.3.2","status":"affected"},{"version":">= 5.4.0, < 5.4.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-23T13:47:08.832Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-xf6p-r2hc-cc6w","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-xf6p-r2hc-cc6w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T13:36:12.812582Z","id":"CVE-2026-114624","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":"2026-10-29T13:37:07.749Z"}}]}}