Incorrect Authorization Affecting twig/twig package, versions >=3.9.0, <3.26.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PHP-TWIGTWIG-16776519
- published20 May 2026
- disclosed20 May 2026
- creditClaude Mythos
Introduced: 20 May 2026
CVE-2026-46634 (opens in a new tab)How to fix?
Upgrade twig/twig to version 3.26.0 or higher.
Overview
twig/twig is a flexible, fast, and secure template language for PHP.
Affected versions of this package are vulnerable to Incorrect Authorization via Environment::createTemplate() when sandboxing is enabled selectively through SourcePolicyInterface. An attacker can bypass Twig sandbox restrictions by rendering attacker-controlled inner templates through template_from_string and include, as synthesized template names are not recognized by name/path-based source policies, causing checkSecurity() enforcement to be skipped and allowing access to unrestricted tags, filters, and functions.