What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-04 · updated 2026-07-22
• Weakness: CWE-502

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.

Affected products

• Apache Software Foundation Apache Fory: before 1.1.0 — fixed in 1.1.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Fory 1.1.0. Check the vendor advisory for mitigations.

References

• https://fory.apache.org/security
• http://www.openwall.com/lists/oss-security/2026/06/04/4

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