CVE-2026-50076: Fory core Apache Fory Java SDK Has Vulnerability

CRITICAL
Advisory Identifier: GHSA-8f39-v287-78jf
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CVSS 9.1
CWE-502
Published
Advisory Summary

CVE-2026-50076 is a CRITICAL (CVSS 9.1) apache fory java sdk has vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Fory core libraries in the Maven ecosystem. The issue involves apache fory java sdk has deserialization of untrusted data in the java replace-resolve path. Remediation is available by upgrading affected packages to version 1.1.0.

CVE-2026-50076 at a Glance

CVE Identifier CVE-2026-50076
GHSA Identifier GHSA-8f39-v287-78jf
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Fory core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-50076

To remediate this vulnerability, upgrade all affected Fory core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.fory:fory-core fixed: 1.1.0 
<dependency>
    <groupId>org.apache.fory</groupId>
    <artifactId>fory-core</artifactId>
    <version>1.1.0</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.fory

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-50076, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.fory

Analyze the terminal output to locate any version of Fory core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.fory command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Fory core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-50076 Affected Fory core Versions

1 component(s)
Fixed Versions:
1.1.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.fory:fory-core
maven/org.apache.fory/fory-core
Maven
< 1.1.0
1.1.0

References

NVD — CVE-2026-50076 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50076
Fory core Security Information SECURITY
https://fory.apache.org/security
Fory core Source Repository REPOSITORY
https://github.com/apache/fory
Fory core Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/06/04/4

Frequently Asked Questions

What is CVE-2026-50076?
CVE-2026-50076 is a security vulnerability in Fory core involving Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path under CWE-502: Deserialization of Untrusted Data.
Which Fory core versions are affected?
Affected versions include releases prior to 1.1.0 across affected packages: org.apache.fory:fory-core.
What version fixes CVE-2026-50076?
Upgrading to 1.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fory-core affected?
Yes, org.apache.fory:fory-core is affected in releases prior to 1.1.0. Upgrade your dependency to 1.1.0 or later.
What is the CVSS score of CVE-2026-50076?
CVE-2026-50076 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-50076?
CVE-2026-50076 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Maven dependencies for CVE-2026-50076?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.fory'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8f39-v287-78jf",
  "modified" : "2026-07-15T22:32:28Z",
  "published" : "2026-06-04T18:30:32Z",
  "aliases" : [ "CVE-2026-50076" ],
  "summary" : "Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path",
  "details" : "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.\n\nUsers are recommended to upgrade to version 1.1.0 or later, which fixes this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.fory:fory-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-50076"
  }, {
    "type" : "WEB",
    "url" : "https://fory.apache.org/security"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/fory"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/06/04/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-15T22:32:28Z",
    "nvd_published_at" : "2026-06-04T17:16:33Z"
  }
}