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Description

Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name without identifier validation, causing raw PHP to be emitted into the generated template source and executed at template-load time. This issue is fixed in version 3.26.0.

PUBLISHED Reserved 2026-05-15 | Published 2026-07-14 | Updated 2026-07-14 | Assigner GitHub_M




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-94: Improper Control of Generation of Code ('Code Injection')

Product status

>= 3.15.0, < 3.26.0
affected

References

github.com/...p/Twig/security/advisories/GHSA-45vw-wh46-2vx8

github.com/...ommit/324fa60545694fa6abe85ded9befcb82e1066bc2

github.com/twigphp/Twig/releases/tag/v3.26.0

cve.org (CVE-2026-46640)

nvd.nist.gov (CVE-2026-46640)

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