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PatchSiren cyber security CVE debrief

CVE-2026-50076 Apache CVE debrief

CVE-2026-50076 is a Deserialization of Untrusted Data vulnerability in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.1.0 on Java/JVM platforms. This vulnerability allows a remote attacker to bypass class registration, TypeChecker, and DisallowedList checks and invoke classpath-present readResolve/readExternal hooks via crafted Fory serialized data. The CVSS score for this vulnerability is 9.1, indicating a Critical severity level.

Vendor
Apache
Product
Fory
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-07-22
Advisory published
2026-06-04
Advisory updated
2026-07-22

Who should care

Users of Apache Fory fory-core Java SDK before version 1.1.0 on Java/JVM platforms should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by the deserialization of untrusted data in the Java replace-resolve path. This allows an attacker to bypass security checks and invoke potentially malicious code.

Defensive priority

High

Recommended defensive actions

  • Upgrade to version 1.1.0 or later of Apache Fory fory-core Java SDK.
  • Refer to [ref-4](https://fory.apache.org/security) for vendor advisory and [ref-5](http://www.openwall.com/lists/oss-security/2026/06/04/4) for additional information.

Evidence notes

The information provided is based on the official CVE record [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-50076) and the NVD detail [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-50076).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50076 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50076

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50076 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50076

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.