Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M

CVE-2026-46639Twig: Sandbox property and method bypass via object-destructuring assignment

High 7.1

In plain English

A high-severity security flaw 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 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.4%top 66.2% 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 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	php-twig	3.26.0-1	DEBIAN-CVE-2026-46639
Packagist	twig/twig	3.26.0	GHSA-mm6w-gr99-p3jj
Ubuntu:25.10	php-twig	no fix listed	UBUNTU-CVE-2026-46639
Ubuntu:26.10	php-twig	no fix listed	UBUNTU-CVE-2026-46639

Affected products (as reported)

Vendor	Product	Versions
twigphp	Twig	>= 3.24.0, < 3.26.0

Weakness: CWE-693 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://github.com/twigphp/Twig/security/advisories/GHSA-mm6w-gr99-p3jj x_refsource_CONFIRM
https://github.com/twigphp/Twig/releases/tag/v3.26.0 x_refsource_MISC