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CVE-2026-71558

Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserialization

Published: Aug 7, 2026Updated: Aug 8, 2026 Sources: CVE List NVDCWE-502
9.8CRITICAL
NVD MITRE
EPSS Score
0.7%
Top 49.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502CWE-843

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache ForyOn-prem
Databases / cache-message-queue
apache
oss-project·USaka apache httpd, apache http server
foryLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

4 techniques
Execution
Initial Access
Privilege Escalation
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References

https://lists.apache.org/thread/oywndv60jwqdv6j37t7bc1qbcc4b235r
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/08/07/3
openwall.com

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