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Vulnerability record · CVE-2026-46639 · published 14 July 2026

CVE-2026-46639: Symfony twig vulnerability

Symfony · Twig

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.

7.1 CVSS 4.0 High EPSS 0.39% · top 69.0% CWE-693 · CWE-693
7.1CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
16 Jul 2026Last modified by NVD

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.

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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/twigphp/Twig/releases/tag/v3.26.0 Release Notes
https://github.com/twigphp/Twig/security/advisories/GHSA-mm6w-gr99-p3jj Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-23614Symfony twig injection vulnerabilityTwig is an open source template language for PHP. When in a sandbox mode, the `arrow` parameter of the `sort` filter must be a closure to avoid attac…EPSS 8.2%9.8CVE-2018-13818Symfony twig code injection vulnerabilityTwig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key parameter. NOTE: the vendor points out that Twig itself is n…EPSS 6.9%8.7CVE-2026-46640Symfony twig code injection vulnerabilityTwig 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…EPSS 0.64%8.7CVE-2026-46633Symfony twig code injection vulnerabilityTwig is a template language for PHP. Prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is p…EPSS 0.69%8.7CVE-2026-24425Symfony twig vulnerabilityTwig versions 2.16.x and 3.9.0 through 3.25.x contain a sandbox bypass vulnerability when using a SourcePolicyInterface that allows attackers with te…EPSS 0.76%8.6CVE-2024-45411Symfony twig vulnerabilityTwig is a template language for PHP. Under some circumstances, the sandbox security checks are not run which allows user-contributed templates to byp…EPSS 0.85%7.7CVE-2026-46634Symfony twig vulnerabilityTwig is a template language for PHP. From 3.9.0 until 3.26.0, template_from_string() compiles an inner template under a synthesized __string_template…EPSS 0.62%7.5CVE-2022-39261Symfony twig path traversal vulnerabilityTwig is a template language for PHP. Versions 1.x prior to 1.44.7, 2.x prior to 2.15.3, and 3.x prior to 3.4.3 encounter an issue when the filesystem…EPSS 3.2%

Source: NIST National Vulnerability Database (record CVE-2026-46639), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.