loads

python · json
sanitizerDerived from model facts
RoleSanitizer
WeaknessCWE-502
WatchesArgument[0] -> ReturnValue
Kinddeserialization
Confidencelow
Corroboration1

Sanitizer boundary: Deserialization turns attacker-influenced bytes into structured values or objects.

Argument map · what each slot does

The pack does not provide a callable signature for this record; the watched access path is shown directly.

ArgAccess pathPurposeWatched
Argument[0]Argument[0]The access path Atropos marks for this model.▲ sanitizer
The weakness
CWE-502
Deserialization of Untrusted Data

Untrusted data is deserialized without ensuring the resulting object is safe.

What goes wrong
Attacker's-eye view · deserialization

A crafted payload invokes constructors, resolves types, or creates objects with behavior beyond plain data.

// modeled boundary: Argument[0] -> ReturnValue loads(attacker_influenced_value);
To decide if this call is a bug, check
1Use a data-only format when possible.
2Select a safe loader and schema.
3Bound size, depth, and resource use.
These checks require the surrounding codebase. The model names the boundary; it does not decide reachability or prove that a guard dominates every path.
Is this a bug in your code?Atropos stops here — by design

Atropos identifies Argument[0] -> ReturnValue as a deserialization sanitizer. It cannot see whether untrusted data reaches this call in your repository.

Lachesis is the codebase-level step: it traces reachability and guards for this symbol.

Check this symbol in Lachesis
The family · deserialization
Model facts · verbatim from the pack
RoleKindAccess pathModel IDConfidence
sanitizerdeserializationArgument[0] -> ReturnValuepython.json.loads.a0-retlow · corrob. 1