CVE-2026-71558
Last modified
CVE-2026-71558 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Fory | >= 0.14.0, < 1.5.0 |
References
- https://lists.apache.org/thread/oywndv60jwqdv6j37t7bc1qbcc4b235rMailing List, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2026/08/07/3Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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