Vulnerability Report

CVE-2026-46640

RCE

Title: Twig dynamic attribute RCE via PHP emission

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2026-46640.

CWE Category CWE-94

Published Date Jul 14, 2026

Modified Date Jul 16, 2026

Exploit Status Not Found

Score 8.7 CVSS v4.0

Exploit Probability (EPSS)

0.41%

Vulnerability Summary

CVE-2026-46640: 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.

Impacted Vendors

symfony 1

sensiolabs 1

Reference Links

https://github.com/twigphp/Twig/commit/324fa60545694fa6abe85ded9befcb82e1066bc2 https://github.com/twigphp/Twig/releases/tag/v3.26.0 https://github.com/twigphp/Twig/security/advisories/GHSA-45vw-wh46-2vx8

CVSS v4.0

Source Entity [email protected]

Severity HIGH

8.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1