Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M

CVE-2026-46640Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation

High 8.7

In plain English

A high-severity code injection in Twig from twigphp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.6%top 49.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:13	php-twig	3.27.0-0+deb13u1	DEBIAN-CVE-2026-46640
Debian:14	php-twig	3.26.0-1	DEBIAN-CVE-2026-46640
Packagist	twig/twig	3.26.0	GHSA-45vw-wh46-2vx8
Ubuntu:25.10	php-twig	no fix listed	UBUNTU-CVE-2026-46640
Ubuntu:26.10	php-twig	no fix listed	UBUNTU-CVE-2026-46640

Affected products (as reported)

Vendor	Product	Versions
twigphp	Twig	>= 3.15.0, < 3.26.0

Weakness: CWE-94 · 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

References

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