CVE-2026-23737 is a high severity vulnerability with a CVSS score of 7.5. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Improper input handling in the JSON deserialization component can lead to arbitrary JavaScript code execution.
The vulnerability can be exploited via overriding constant value and error deserialization, which allows indirect access to unsafe JS evaluation. This requires at least the ability to perform 4 separate requests on the same function and partial knowledge of how the serialized data is used during later runtime processing.
This vulnerability affects the fromJSON and fromCrossJSON functions in a client-to-server transmission scenario.
No known workarounds or mitigations are known, so please upgrade to the patched version.
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