CVE-2026-48807

Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filters

State: Published
Severity: 7.1 High
Published: Jul 14, 2026
Updated: Jul 15, 2026
Reserved: May 22, 2026

Description

Twig is a template language for PHP. Prior to 3.27.0, the sandbox __toString() checks do not fully cover Traversable values passed to join and replace filters or operands evaluated by the in and not in operators, allowing contained Stringable objects to be coerced to strings without consulting the sandbox policy. This issue is fixed in version 3.27.0.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	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	GitHub_M

Weaknesses

CWE-693 Protection Mechanism Failure
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
Twigtwigphp	< 3.27.0Affected

References

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