{"id":"CVE-2026-46636","title":"Twig is a template language for PHP","summary":"Twig is a template language for PHP. From version 1.0.0 to before version 3.27.0, SecurityPolicy::checkMethodAllowed() unconditionally whitelists all method calls on instances of Twig\\Markup. Twig\\Markup is not final, so subclasses inher…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-1336"],"vendor":"twigphp","product":"Twig","affected":["Twig >= 1.0.0, < 3.27.0"],"published":"2026-09-04","updated":"2026-09-08","sourceUpdated":"2026-09-08T18:17:37.770","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46636","references":[{"url":"http://github.com/twigphp/Twig/releases/tag/v3.27.0","label":"security-advisories@github.com"},{"url":"https://github.com/twigphp/Twig/security/advisories/GHSA-64jr-qjx4-w2fh","label":"security-advisories@github.com"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-46636","label":"security-advisories@github.com"},{"url":"https://security-tracker.debian.org/tracker/DSA-6311-1","label":"security-advisories@github.com"},{"url":"https://symfony.com/blog/cve-2026-46636-sandbox-filter-tag-and-function-allow-list-bypass-when-sandbox-state-changes-between-renders","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46636.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-46636"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46636"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-08T17:37:04.193009Z"},"cvssSource":"cna","epss":0.00358,"epssPercentile":0.29643,"ingestedAt":"2026-09-08T18:07:34.885Z","scores":{"cna":8.7,"vendor":8.6},"slug":"CVE-2026-46636","body":"## Overview\n\nTwig is a template language for PHP. From version 1.0.0 to before version 3.27.0, SecurityPolicy::checkMethodAllowed() unconditionally whitelists all method calls on instances of Twig\\Markup. Twig\\Markup is not final, so subclasses inherit the bypass. An application that passes an object of a Markup-derived class into a sandboxed template (typically to mark a chunk of HTML as safe) inadvertently exposes every public method of that subclass to template authors, regardless of the configured allowedMethods list. This issue has been patched in version 3.27.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46636.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}