Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.
Summary
Out-of-bounds Read vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0 when deserializing structs containing tagged integer fields. A crafted input payload may trigger an out-of-bounds heap read in the tagged integer fast-path deserializer, potentially causing information disclosure or denial of service. Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications that do not use Apache Fory C++ or do not use tagged integer fields are not affected.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Apache Fory (Apache Software Foundation) Fixed in 1.5.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Fory 1.5.0
3 records Highest priority Priority MEDIUM 3 MEDIUM
Other records, highest priority first
- TI-2026-50130 Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserializationPriority MEDIUM 51
- TI-2026-50131 Apache Fory: Uncaught panic (remote DoS) in Go meta-string decoder from untrusted metadataPriority MEDIUM 40
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71560
- 2026-10-03 Alias added: GHSA-r6vj-r3jc-f9gp
References
More Apache Fory vulnerabilities
- TI-2025-38065 Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory CVSS 3.1CRITICAL 9.8
- TI-2026-50130 Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserialization CVSS 3.1CRITICAL 9.8
- TI-2026-46171 Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths CVSS 3.1CRITICAL 9.8
- TI-2026-46169 Apache Fory, Apache Fory: Class-registration bypass through an auto-admitted SerializedLambda capturing interface CVSS 3.1CRITICAL 9.8
- TI-2026-35617 Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement CVSS 3.1CRITICAL 9.8
- TI-2026-36874 Apache Fory: Java ReplaceResolverSerializer deserialization checks bypass CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-71560 · CVE Program
- CVE-2026-71560 · NVD
- FIRST EPSS
- GHSA-r6vj-r3jc-f9gp · GitHub Advisory Database · CC BY 4.0
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