Thread-Safety Vulnerability in JSON Parsing in webargs

CVE-2019-9710 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.

Learn more about our Web App Pen Testing.