Vulnerability · Published Jun 4, 2026 · Assigned by apache

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

Critical 9.1

In plain English

A critical-severity unsafe deserialization in Apache Fory from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.5%top 55.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.apache.fory:fory-core	1.1.0	GHSA-8f39-v287-78jf

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache Fory	0 – before 1.1.0

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

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