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Advisory record · GHSA-8f39-v287-78jf

Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path

CVSS 9.1 CriticalCriticalEPSS 0.0052 · 44th percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 4 Jun 2026, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.fory:fory-coreMaven<1.1.01.1.0
Identifiers
GHSA-8f39-v287-78jf · CVE-2026-50076
Weakness (CWE)
CWE-502
Tags
Published
4 Jun 2026
Updated
15 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Fory fory-core Java SDK versions before 1.1.0 are vulnerable. A remote attacker who can supply crafted Fory serialized data can bypass class registration, TypeChecker, and DisallowedList checks, and cause readResolve or readExternal hooks present on the classpath to run. Upgrade fory-core to version 1.1.0 or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0052, the 44th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.