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Critical · 9.1 CVE-2026-64609 EUVD-2026-46172GHSA-8w3v-jcfp-ffw5

Apache Fory, Apache Fory: Out-of-Bounds Read via sun.misc.Unsafe in zero-copy java deserialization

Published Jul 21, 2026 · Updated Jul 21, 2026 · Assigned by apache

Description

Out-of-bounds read via sun.misc.Unsafe in Apache Fory. When out-of-band zero-copy deserialization is used, readAlignedVarUint() can read beyond the bounds of the underlying buffer. Out-of-band zero-copy deserialization is an opt-in feature; applications that do not use it are not affected.

This issue affects Apache Fory (formerly Apache Fury): from 0.5.0 before 1.4.0. Versions before 0.11.0 were published under the Maven coordinates org.apache.fury:fury-core.

Users are recommended to upgrade to version 1.4.0, which fixes the issue.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache Fory 0.11.0 – < 1.4.0, 0.5.0 – < 0.11.0 1.4.0

References