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CVE-2026-71558 is a heap type confusion vulnerability in Apache Fory C++ deserialization affecting versions 0.14.0 through versions before 1.5.0. The flaw occurs during polymorphic smart-pointer deserialization, where a crafted input payload can bypass type compatibility checks and cause an object of an incompatible type to be treated as the declared base type. This type confusion can trigger undefined behavior in the deserialization path and may be exploitable for denial of service or arbitrary code execution. Applications that do not use Apache Fory C++ polymorphic smart-pointer deserialization are not affected.
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No public exploit code observed for this vulnerability.
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A heap type confusion vulnerability in Apache Fory C++ deserialization that can bypass type compatibility checks during polymorphic smart-pointer deserialization, potentially causing denial of service or arbitrary code execution.
A heap type confusion vulnerability in Apache Fory C++ deserialization that allows crafted input to bypass type compatibility checks during polymorphic smart-pointer deserialization, potentially causing denial of service or arbitrary code execution.
A heap type confusion vulnerability in Apache Fory C++ deserialization that allows crafted payloads to bypass type compatibility checks during polymorphic smart-pointer deserialization, potentially causing denial of service or arbitrary code execution.
A heap type confusion vulnerability in Apache Fory C++ deserialization that allows crafted input to bypass type compatibility checks during polymorphic smart-pointer deserialization, potentially causing denial of service or arbitrary code execution.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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