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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.

PUBLISHED Reserved 2026-05-22 | Published 2026-07-14 | Updated 2026-07-14 | Assigner GitHub_M




HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-693: Protection Mechanism Failure

CWE-863: Incorrect Authorization

Product status

< 3.27.0
affected

References

github.com/...p/Twig/security/advisories/GHSA-5v5v-ww74-355v

github.com/...ommit/9ff41014639ef0e8eb50ac7669191c309d863105

github.com/twigphp/Twig/releases/tag/v3.27.0

cve.org (CVE-2026-48806)

nvd.nist.gov (CVE-2026-48806)

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