CVE-2026-46640 PUBLISHED

Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation

Assigner: GitHub_M
Reserved: 15.05.2026 Published: 14.07.2026 Updated: 15.07.2026

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.

Metrics

CVSS 4.0

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

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	twigphp
Product	Twig
Versions	Version >= 3.15.0, < 3.26.0 is affected

References

Problem Types

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