Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M

CVE-2026-46633Twig: PHP code injection via `{% use %}` template name

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 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.8%top 44.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Twig is a template language for PHP. Starting in 1.15.1 and prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into the compiled cache file. This issue is fixed in version 3.26.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	php-twig	3.5.1-1+deb12u3	DEBIAN-CVE-2026-46633
Debian:13	php-twig	3.27.0-0+deb13u1	DEBIAN-CVE-2026-46633
Debian:14	php-twig	3.26.0-1	DEBIAN-CVE-2026-46633
Packagist	twig/twig	3.26.0	GHSA-7p85-w9px-jpjp
Ubuntu:25.10	php-twig	no fix listed	UBUNTU-CVE-2026-46633
Ubuntu:26.10	php-twig	no fix listed	UBUNTU-CVE-2026-46633

Affected products (as reported)

Vendor	Product	Versions
twigphp	Twig	>= 1.15.1, < 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-7p85-w9px-jpjp x_refsource_CONFIRM
https://github.com/twigphp/Twig/commit/679447fa29083043665482ccf7d64372472621b8 x_refsource_MISC
https://github.com/twigphp/Twig/commit/a2c6db7ea7d2c90923e6708019ec1442526d1c30 x_refsource_MISC
https://github.com/twigphp/Twig/commit/e9ff55f6910832428e48a35b2e0748189ad49ae3 x_refsource_MISC
https://gist.github.com/vladko312/d61b950f168c791db4786b83dc7a81e6 x_refsource_MISC
https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46633.yaml x_refsource_MISC
https://github.com/twigphp/Twig/releases/tag/v3.26.0 x_refsource_MISC
https://symfony.com/cve-2026-46633 x_refsource_MISC