CVE-2026-71558: CWE-502 Deserialization of Untrusted Data in Apache Software Foundation Apache Fory
CVE-2026-71558 is a heap type confusion vulnerability in Apache Fory C++ deserialization affecting versions from 0.14.0 before 1.5.0. The flaw allows crafted input payloads to bypass type compatibility checks during polymorphic smart-pointer deserialization, causing an incompatible object type to be treated as the declared base type. This can lead to undefined behavior, including potential denial of service or arbitrary code execution. The issue is fixed in Apache Fory version 1.5.0. Applications not using polymorphic smart-pointer deserialization are not affected.
AI Analysis
Technical Summary
This vulnerability in Apache Fory C++ occurs during deserialization of polymorphic smart pointers, where a crafted payload can bypass type compatibility checks. This results in heap type confusion, allowing an object of an incompatible type to be treated as the declared base type. Such behavior can cause undefined program behavior and may enable denial of service or arbitrary code execution. The vulnerability affects Apache Fory versions from 0.14.0 up to but not including 1.5.0. The vendor recommends upgrading to version 1.5.0 to remediate the issue.
Potential Impact
Successful exploitation can cause undefined behavior in the application, potentially leading to denial of service or arbitrary code execution. This poses a significant security risk for applications using Apache Fory C++ polymorphic smart-pointer deserialization.
Mitigation Recommendations
Users should upgrade to Apache Fory version 1.5.0, which addresses this vulnerability. Applications not using polymorphic smart-pointer deserialization in Apache Fory C++ are not affected and do not require action. Patch status is not explicitly confirmed in the advisory, but upgrading to 1.5.0 is the recommended remediation.
CVE-2026-71558: CWE-502 Deserialization of Untrusted Data in Apache Software Foundation Apache Fory
Description
CVE-2026-71558 is a heap type confusion vulnerability in Apache Fory C++ deserialization affecting versions from 0.14.0 before 1.5.0. The flaw allows crafted input payloads to bypass type compatibility checks during polymorphic smart-pointer deserialization, causing an incompatible object type to be treated as the declared base type. This can lead to undefined behavior, including potential denial of service or arbitrary code execution. The issue is fixed in Apache Fory version 1.5.0. Applications not using polymorphic smart-pointer deserialization are not affected.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache Fory C++ occurs during deserialization of polymorphic smart pointers, where a crafted payload can bypass type compatibility checks. This results in heap type confusion, allowing an object of an incompatible type to be treated as the declared base type. Such behavior can cause undefined program behavior and may enable denial of service or arbitrary code execution. The vulnerability affects Apache Fory versions from 0.14.0 up to but not including 1.5.0. The vendor recommends upgrading to version 1.5.0 to remediate the issue.
Potential Impact
Successful exploitation can cause undefined behavior in the application, potentially leading to denial of service or arbitrary code execution. This poses a significant security risk for applications using Apache Fory C++ polymorphic smart-pointer deserialization.
Mitigation Recommendations
Users should upgrade to Apache Fory version 1.5.0, which addresses this vulnerability. Applications not using polymorphic smart-pointer deserialization in Apache Fory C++ are not affected and do not require action. Patch status is not explicitly confirmed in the advisory, but upgrading to 1.5.0 is the recommended remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-07T07:01:06.753Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a75a4d4bf8831d5391462e4
Added to database: 08/07/2026, 09:26:44 UTC
Last enriched: 08/07/2026, 09:45:41 UTC
Last updated: 08/07/2026, 09:58:08 UTC
Views: 12
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