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CVE-2026-50076 is a deserialization of untrusted data vulnerability in the Java replace-resolve path, described as the ReplaceResolverSerializer pathway, in Apache Fory fory-core Java SDK before version 1.1.0 on Java/JVM platforms. By supplying crafted Fory serialized data, a remote attacker can bypass multiple intended deserialization safeguards, including class registration enforcement, TypeChecker validation, and DisallowedList checks. Successful exploitation can cause the deserialization flow to invoke classpath-present readResolve and readExternal hooks, exposing applications that deserialize untrusted external Fory data streams to dangerous attacker-controlled object processing and potentially code-reachable gadget execution paths.
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No public exploit code observed for this vulnerability.
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A high-severity remote code execution vulnerability in Apache Fory caused by incomplete verification during deserialization, allowing crafted data streams to bypass protections and trigger dangerous classpath-present hooks such as readResolve or readExternal.
A deserialization of untrusted data vulnerability in the Java replace-resolve path of Apache Fory fory-core Java SDK before 1.1.0 that allows a remote attacker to bypass security checks and invoke classpath-present readResolve/readExternal hooks using crafted serialized data.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.