What’s Vulnerable › Vulnerabilities

CVE-2026-24425: Twig 2.16.x & 3.9.0-3.25.x Sandbox Bypass via SourcePolicyInterface

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-20 · updated 2026-10-08
• Weakness: CWE-693

Description

Twig 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 template rendering capabilities to pass arbitrary PHP callables to sort, filter, map, and reduce filters. Attackers can exploit the runtime check that fails to use the current template source to bypass sandbox restrictions and execute arbitrary code when the sandbox is enabled through a source policy rather than globally.

Affected products

• twigphp Twig: from 2.16.0 through 2.16.1; from 3.9.0 before 3.26.0 — fixed in 3.26.0

How to fix

Upgrade to a fixed version: twigphp Twig 3.26.0. Check the vendor advisory for mitigations.

References

• https://github.com/twigphp/Twig/releases/tag/v3.26.0
• https://github.com/twigphp/Twig/security/advisories/GHSA-2q52-x2ff-qgfr
• https://www.vulncheck.com/advisories/twig-x-x-sandbox-bypass-via-sourcepolicyinterface

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