Vulnerability Details CVE-2026-71558
Heap type confusion vulnerability in Apache Fory C++ deserialization.
This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0. A crafted input payload can bypass type compatibility checks during polymorphic smart-pointer deserialization, causing an object of an incompatible type to be treated as the declared base type. This may result in undefined behavior and potentially lead to denial of service or arbitrary code execution.
Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications not using Apache Fory C++ polymorphic smart-pointer deserialization are not affected.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 50.3%
CVSS Severity
CVSS v3 Score 9.8
References
Products affected by CVE-2026-71558
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cpe:2.3:a:apache:fory:0.14.0
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cpe:2.3:a:apache:fory:0.14.1
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cpe:2.3:a:apache:fory:0.15.0
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cpe:2.3:a:apache:fory:0.16.0
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cpe:2.3:a:apache:fory:0.17.0
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cpe:2.3:a:apache:fory:1.0.0
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cpe:2.3:a:apache:fory:1.1.0
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cpe:2.3:a:apache:fory:1.2.0
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cpe:2.3:a:apache:fory:1.3.0
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cpe:2.3:a:apache:fory:1.4.0