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High · 7.2 CVE-2025-66631 EUVD-2025-201825GHSA-wq34-7f4g-953v

CSLA .NET is vulnerable to Remote Code Execution via WcfProxy

Published Dec 9, 2025 · Updated Dec 9, 2025 · Assigned by GitHub_M

Description

CSLA .NET is a framework designed for the development of reusable, object-oriented business layers for applications. Versions 5.5.4 and below allow the use of WcfProxy. WcfProxy uses the now-obsolete NetDataContractSerializer (NDCS) and is vulnerable to remote code execution during deserialization. This vulnerability is fixed in version 6.0.0. To workaround this issue, remove the WcfProxy in data portal configurations.

Affected products

VendorProductAffectedFixed
MarimerLLC csla < 6.0.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
NuGet Csla < 6.0.0 6.0.0 GHSA-wq34-7f4g-953v

References