{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46636", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-15T20:11:54.584Z", "datePublished": "2026-09-04T22:07:35.122Z", "dateUpdated": "2026-09-04T22:07:35.122Z"}, "containers": {"cna": {"title": "Twig: Sandbox method allowlist bypass via `Markup` subclass", "problemTypes": [{"descriptions": [{"cweId": "CWE-1336", "lang": "en", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/twigphp/Twig/security/advisories/GHSA-64jr-qjx4-w2fh", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/twigphp/Twig/security/advisories/GHSA-64jr-qjx4-w2fh"}, {"name": "https://security-tracker.debian.org/tracker/CVE-2026-46636", "tags": ["x_refsource_MISC"], "url": "https://security-tracker.debian.org/tracker/CVE-2026-46636"}, {"name": "https://security-tracker.debian.org/tracker/DSA-6311-1", "tags": ["x_refsource_MISC"], "url": "https://security-tracker.debian.org/tracker/DSA-6311-1"}, {"name": "https://symfony.com/blog/cve-2026-46636-sandbox-filter-tag-and-function-allow-list-bypass-when-sandbox-state-changes-between-renders", "tags": ["x_refsource_MISC"], "url": "https://symfony.com/blog/cve-2026-46636-sandbox-filter-tag-and-function-allow-list-bypass-when-sandbox-state-changes-between-renders"}, {"name": "http://github.com/twigphp/Twig/releases/tag/v3.27.0", "tags": ["x_refsource_MISC"], "url": "http://github.com/twigphp/Twig/releases/tag/v3.27.0"}], "affected": [{"vendor": "twigphp", "product": "Twig", "versions": [{"version": ">= 1.0.0, < 3.27.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-04T22:07:35.122Z"}, "descriptions": [{"lang": "en", "value": "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 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."}], "source": {"advisory": "GHSA-64jr-qjx4-w2fh", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "Twig", "vendor": "twigphp", "versions": [{"status": "affected", "version": ">= 1.0.0, < 3.27.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 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."}], "id": "CVE-2026-46636", "lastModified": "2026-09-04T22:17:17.360", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-04T22:17:17.360", "references": [{"source": "security-advisories@github.com", "url": "http://github.com/twigphp/Twig/releases/tag/v3.27.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/twigphp/Twig/security/advisories/GHSA-64jr-qjx4-w2fh"}, {"source": "security-advisories@github.com", "url": "https://security-tracker.debian.org/tracker/CVE-2026-46636"}, {"source": "security-advisories@github.com", "url": "https://security-tracker.debian.org/tracker/DSA-6311-1"}, {"source": "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"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-09-04T23:30:06.520410+00:00", "updated": "2026-09-04T23:30:06.520416+00:00", "vendors": []}