CVE-2026-33938

A flaw was found in Handlebars. A remote attacker can exploit this vulnerability by manipulating the @partial-block special variable within the template data context. By overwriting @partial-block with a specially crafted Abstract Syntax Tree AST through a helper, a subsequent invocation of...

CVE-2026-33937

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript withou...

DEBIAN-CVE-2026-33937

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript withou...

CVE-2026-33937

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript withou...

CVE-2026-33938

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the @partial-block special variable is stored in the template data context and is reachable and mutable from within a template via helpers that accept arbitrary objects. When a helper...

CVE-2026-33940 Handlebars.js has JavaScript Injection via AST Type Confusion when passing an object as dynamic partial

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, a crafted object placed in the template context can bypass all conditional guards in resolvePartial and cause invokePartial to return undefined. The Handlebars runtime then treats the...

CVE-2026-33940

CVE-2026-33940 affects Handlebars runtimes from 4.0.0 through 4.7.8, where a crafted object in the template context can bypass guards in resolvePartial() and cause invokePartial() to return undefined. This leads the runtime to treat an unresolved partial as a source to be compiled, feeding a vali...

CVE-2026-33940 Handlebars.js has JavaScript Injection via AST Type Confusion when passing an object as dynamic partial

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, a crafted object placed in the template context can bypass all conditional guards in resolvePartial and cause invokePartial to return undefined. The Handlebars runtime then treats the...

CVE-2026-33938 Handlebars.js has JavaScript Injection via AST Type Confusion by tampering @partial-block

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the @partial-block special variable is stored in the template data context and is reachable and mutable from within a template via helpers that accept arbitrary objects. When a helper...

CVE-2026-33938 Handlebars.js has JavaScript Injection via AST Type Confusion by tampering @partial-block

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the @partial-block special variable is stored in the template data context and is reachable and mutable from within a template via helpers that accept arbitrary objects. When a helper...

CVE-2026-33937

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript withou...

CVE-2026-33937

CVE-2026-33937 affects Handlebars.js prior to 4.7.9, where Handlebars.compile() accepts a pre-parsed AST; the NumberLiteral.value is emitted into generated JS without quoting, enabling remote code execution if a crafted AST is supplied. Versions 4.0.0–4.7.8 are vulnerable; 4.7.9 fixes the issue. ...

CVE-2026-33937 Handlebars.js has JavaScript Injection via AST Type Confusion

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript withou...

Handlebars.js has JavaScript Injection via AST Type Confusion

Summary Handlebars.compile accepts a pre-parsed AST object in addition to a template string. The value field of a NumberLiteral AST node is emitted directly into the generated JavaScript without quoting or sanitization. An attacker who can supply a crafted AST to compile can therefore inject and...

Access of Resource Using Incompatible Type ('Type Confusion')

Overview handlebars is an extension to the Mustache templating language. Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type 'Type Confusion' via the compile function. An attacker can execute arbitrary code by supplying a crafted Abstract Syntax Tree AST...

CVE-2026-4965

A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolvetype of the file letta/functions/astparsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The...

CVE-2026-4965

CVE-2026-4965 affects letta-ai letta 0.16.4. The vulnerability resides in letta/functions/ast_parsers.py, in the resolve_type function, where improper neutralization of directives in dynamically evaluated code enables remote arbitrary-code execution. The issue is linked to an incomplete fix for C...

CVE-2026-4965 letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolvetype of the file letta/functions/astparsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The...

CVE-2026-4965 letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolvetype of the file letta/functions/astparsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The...

CVE-2026-4965 letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolvetype of the file letta/functions/astparsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The...