{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-30940","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-07T17:34:39.978Z","datePublished":"2026-03-31T00:45:35.177Z","dateUpdated":"2026-04-02T14:46:54.107Z"},"containers":{"cna":{"title":"baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE","problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","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-c5c6-37vq-pjcq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq"},{"name":"https://basercms.net/security/JVN_20837860","tags":["x_refsource_MISC"],"url":"https://basercms.net/security/JVN_20837860"},{"name":"https://github.com/baserproject/basercms/releases/tag/5.2.3","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/releases/tag/5.2.3"}],"affected":[{"vendor":"baserproject","product":"basercms","versions":[{"version":"< 5.2.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-31T00:45:35.177Z"},"descriptions":[{"lang":"en","value":"baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3."}],"source":{"advisory":"GHSA-c5c6-37vq-pjcq","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-02T14:46:24.039682Z","id":"CVE-2026-30940","options":[{"Exploitation":"none"},{"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":"2026-04-02T14:46:54.107Z"}}]}}