Twig: Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

Description SandboxNodeVisitor enforces SecurityPolicy::checkMethodAllowed for implicit toString calls by wrapping selected AST nodes in CheckToStringNode. The set of wrapped nodes is incomplete, and several Twig language constructs still trigger PHP string coercion on a Stringable operand withou...

GHSA-PR2W-4GPJ-CPQ4 Twig: Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

Description SandboxNodeVisitor enforces SecurityPolicy::checkMethodAllowed for implicit toString calls by wrapping selected AST nodes in CheckToStringNode. The set of wrapped nodes is incomplete, and several Twig language constructs still trigger PHP string coercion on a Stringable operand withou...

Arbitrary Code Execution

SandboxJS is vulnerable to a sandbox escape vulnerability. The vulnerability is due to inconsistent key validation during property access, where the key is sanitized using hasOwnPropertykey but not strictly enforced as a string, allowing attackers to supply crafted objects that coerce to differen...

CVE-2026-25641

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25641

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

More info at https://symfony.com/cve-2026-47732...