{"id":"CVE-2026-65608","aliases":["GHSA-c4wf-2xxc-68qm"],"url":"https://o3.security/vulnerability/CVE-2026-65608","summary":"Grav before 2.0.9 Remote Code Execution via FlexDirectory","details":"Grav versions >= 1.7.0 and before 2.0.9 contain a remote code execution vulnerability. FlexDirectory::dynamicDataField() resolves blueprint data-*@: directives by calling call_user_func_array() on attacker-influenced input, validating only that the target is callable (is_callable()) without restricting dangerous functions such as exec, system, passthru, or shell_exec. Because FlexDirectory registers this handler for every Flex directory, it bypasses the validation added to Blueprint::dynamicData() in 2.0.7 (GHSA-fj2p-qj2f-74v5). Any authenticated user with create or update permission on any Flex-based directory (Flex Users, Flex Pages, Flex Objects, or custom Flex types) can execute arbitrary shell commands on the server.","published":"2026-07-23T11:42:15.534Z","modified":"2026-08-12T03:51:42.754780640Z","cvss":null,"epss":{"score":0.00849,"percentile":0.56426,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"getgrav/grav","fixedVersion":"2.0.9"}],"fix":{"url":"https://github.com/getgrav/grav/commit/fae9e1bf2c40ce0b50d0dfce647aaa1d22f98969","label":"getgrav/grav@fae9e1b"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65608.json"},{"type":"ADVISORY","url":"https://github.com/getgrav/grav/security/advisories/GHSA-c4wf-2xxc-68qm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65608"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/grav-before-remote-code-execution-via-flexdirectory"},{"type":"FIX","url":"https://github.com/getgrav/grav/commit/fae9e1bf2c40ce0b50d0dfce647aaa1d22f98969"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:42.754780640Z"}}