{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71291", "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "state": "PUBLISHED", "assignerShortName": "TuranSec", "dateReserved": "2026-08-05T12:37:57.357Z", "datePublished": "2026-08-05T12:38:41.070Z", "dateUpdated": "2026-08-05T12:38:41.070Z"}, "containers": {"cna": {"title": "Bolt CMS Server-Side Template Injection via Unsandboxed allow_twig Field Rendering", "descriptions": [{"lang": "en", "value": "Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue() calls shouldBeRenderedAsTwig(), which gates rendering only on the field definition's allow_twig flag and a regex checking for `{{`, `{%`, or `{#`; when true, the raw field value is compiled and rendered via `self::getTwig()->createTemplate($value)->render(['record' => $this->getContent()])` with no sandboxing. Bolt's own bundled config/bolt/contenttypes.yaml sets `allow_twig: true` on the default \"pages\" contenttype's content field out of the box. Any user with edit access to that content type (a standard editor role, not just an administrator) can inject a Twig payload such as `{{ ['id']|map('passthru')|join }}` that executes arbitrary OS commands when the content is saved and rendered, achieving remote code execution as the web server user."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-1336", "cweId": "CWE-1336", "type": "CWE"}]}], "affected": [{"vendor": "bolt", "product": "core", "programFiles": ["src/Entity/Field.php", "config/bolt/contenttypes.yaml"], "versions": [{"version": "0", "lessThanOrEqual": "6.1", "status": "affected", "versionType": "custom"}], "defaultStatus": "unaffected"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/bolt/core"}, {"url": "https://github.com/bolt/core/blob/6.1/src/Entity/Field.php"}], "credits": [{"lang": "en", "value": "Saidakbarxon Maxsudxonov", "type": "finder"}], "providerMetadata": {"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "shortName": "TuranSec", "dateUpdated": "2026-08-05T12:38:41.070Z"}}}}

{}

{}

{}

{}