Vulnerability in Symfony Twig
CVE-2026-46639
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.
EPSS: 0.004 (32.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Symfony Twig
- Twigphp Twig — versions >= 3.24.0, < 3.26.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-46639?
- CVE-2026-46639 is a medium-severity vulnerability in Symfony Twig, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2026-07-14.
- How severe is CVE-2026-46639?
- Medium severity. CVSS v3 base score is 6.5 out of 10.