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CVE-2026-47732— Twig Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

Quick assessment

Affected
twigphp Twig
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

twigphp Twig是twigphp的PHP模板引擎。 twigphp Twig 3.26.0之前版本存在授权问题漏洞，该漏洞源于Twig语言结构触发PHP字符串强制转换时未检查SecurityPolicy::checkMethodAllowed()，可能允许沙盒模板作者调用__toString()方法。

AI Predicted 9.8 Difficulty: Easy EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
twigphp Twig < 3.26.0 affected
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I. Basic Information for CVE-2026-47732

Vulnerability Information
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Vulnerability Title
Twig Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points
Source: CVE Program / CVE List V5
Vulnerability Description
Twig is a template language for PHP. Prior to 3.26.0, several Twig language constructs trigger PHP string coercion on a Stringable operand without consulting SecurityPolicy::checkMethodAllowed(), allowing a sandboxed template author to invoke __toString() on objects reachable in the render context through conditional expressions, comparison operators, tests, template-loading tags, dynamic attribute names, spread arguments, the do tag, and the .. range operator. This issue is fixed in version 3.26.0.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
twigphp Twig 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
twigphp Twig是twigphp的PHP模板引擎。 twigphp Twig 3.26.0之前版本存在授权问题漏洞，该漏洞源于Twig语言结构触发PHP字符串强制转换时未检查SecurityPolicy::checkMethodAllowed()，可能允许沙盒模板作者调用__toString()方法。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
twigphp Twig < 3.26.0 -

II. Public POCs for CVE-2026-47732

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III. Intelligence Information for CVE-2026-47732

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Vendor Advisories for CVE-2026-47732 (1)

Vendor Pages for CVE-2026-47732 (1)

Same Patch Batch · twigphp · 2026-07-14 · 17 CVEs total

CVE-2026-46634 7.7 HIGH Twig: `template_from_string()` escapes a SourcePolicy-driven sandbox via synthesized templ
CVE-2026-47730 Twig: XSS in profiler HtmlDumper via unescaped template and profile names
CVE-2026-48806 Twig: Sandbox `__toString()` policy bypass via dynamic mapping keys
CVE-2026-48805 Twig: Sandbox state regression in deprecated internal wrappers in `src/Resources/core.php`
CVE-2026-48808 Twig: Sandbox property allowlist bypass via the `column` filter under `SourcePolicyInterfa
CVE-2026-48807 Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filte
CVE-2026-49981 Twig: Sandbox filter, tag and function allow-list bypass when sandbox state changes betwee
CVE-2026-46635 Twig: Sandbox property allowlist bypass via the `column` filter (array_column on objects)
CVE-2026-46638 Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete f
CVE-2026-46628 Twig: The `spaceless` filter implicitly marks its output as safe
CVE-2026-46640 Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation
CVE-2026-46637 Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`
CVE-2026-46639 Twig: Sandbox property and method bypass via object-destructuring assignment
CVE-2026-46627 Twig: Sandbox resource exhaustion via unbounded `for` / `range()`
CVE-2026-46633 Twig: PHP code injection via `{% use %}` template name
CVE-2026-46629 Twig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled argu

IV. Related Vulnerabilities

Same product: Twig
Same vendor: twigphp
Same weakness: CWE-863

V. Comments for CVE-2026-47732

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