CVE-2026-46628: Improper Encoding

Description

Twig is a template language for PHP. Prior to 3.26.0, the deprecated spaceless filter is registered as safe for HTML, causing Twig autoescaping to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. This issue is fixed in version 3.26.0.

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Weakness Type (CWE)

CWE-116 CWE-116

References

Other References

https://github.com/twigphp/Twig/commit/3190b9ae12614dfd58cc5d8f394bac4708b17913 https://github.com/twigphp/Twig/releases/tag/v3.26.0 https://github.com/twigphp/Twig/security/advisories/GHSA-4j38-f5cw-54h7

Frequently Asked Questions

What is CVE-2026-46628? +

Twig is a template language for PHP. Prior to 3.26.0, the deprecated spaceless filter is registered as safe for HTML, causing Twig autoescaping to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. This issue is fixed in version 3.26.0.

How do I check if I'm vulnerable to CVE-2026-46628? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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