{"id":"CVE-2026-48806","state":"PUBLISHED","title":"Twig: Sandbox `__toString()` policy bypass via dynamic mapping keys","description":"Twig is a template language for PHP. Prior to 3.27.0, ArrayExpression does not guard dynamic mapping keys that are coerced to strings, allowing PHP to invoke __toString() on a Stringable object used as a mapping key without calling SandboxExtension::ensureToStringAllowed(). This issue is fixed in version 3.27.0.","publishedAt":"2026-07-14T21:28:08.781Z","updatedAt":"2026-07-15T12:47:14.623Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["twigphp Twig"],"affected":[{"vendor":"twigphp","product":"Twig","versions":[{"version":"< 3.27.0","status":"affected"}]}],"references":["https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v","https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105","https://github.com/twigphp/Twig/releases/tag/v3.27.0"],"weaknesses":["CWE-693","CWE-863"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48806.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48806","state":"PUBLISHED","datePublished":"2026-07-14T21:28:08.781Z","dateUpdated":"2026-07-15T12:47:14.623Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-22T20:57:10.975Z"},"containers":{"cna":{"title":"Twig: Sandbox `__toString()` policy bypass via dynamic mapping keys","descriptions":[{"lang":"en","value":"Twig is a template language for PHP. Prior to 3.27.0, ArrayExpression does not guard dynamic mapping keys that are coerced to strings, allowing PHP to invoke __toString() on a Stringable object used as a mapping key without calling SandboxExtension::ensureToStringAllowed(). This issue is fixed in version 3.27.0."}],"affected":[{"vendor":"twigphp","product":"Twig","versions":[{"version":"< 3.27.0","status":"affected"}]}],"references":[{"url":"https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v","name":"https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105","name":"https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105","tags":["x_refsource_MISC"]},{"url":"https://github.com/twigphp/Twig/releases/tag/v3.27.0","name":"https://github.com/twigphp/Twig/releases/tag/v3.27.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T21:28:08.781Z"},"source":{"advisory":"GHSA-5v5v-ww74-355v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T12:47:04.147602Z","id":"CVE-2026-48806","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T12:47:14.623Z"}}]}}}