CVE-2026-50076 Apache Fory: Java ReplaceResolverSerializer deserialization checks bypass

What is CVE-2026-50076?

CVE-2026-50076 is a critical vulnerability in Apache Fory, published on 4 Jun 2026.

Official description

Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.1.0 on Java/JVM platforms allows a remote attacker to bypass class registration, TypeChecker, and DisallowedList checks and invoke classpath-present readResolve/readExternal hooks via crafted Fory serialized data.

Users are recommended to upgrade to version 1.1.0 or later, which fixes this issue.

Weakness: CWE-502

Which versions are affected by CVE-2026-50076?

2 open source packages ship an affected version, including org.apache.fory:fory-core. It affects 1 product.

Products include Apache Fory.

How do I fix CVE-2026-50076?

Upgrade org.apache.fory:fory-core to 1.1.0 or later.

Is CVE-2026-50076 being exploited?

There is no known exploitation of CVE-2026-50076 in the wild and no public exploit code.

Other vulnerabilities in Apache Fory

• CVE-2026-71558 Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserialization Critical 9.8
• CVE-2026-64606 Apache Fory, Apache Fory: Class-registration bypass through an auto-admitted SerializedLambda capturing interface Critical 9.8
• CVE-2026-64608 Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths Critical 9.8
• CVE-2026-48207 Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement Critical 9.8
• CVE-2025-61622 Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8f39-v287-78jf.