Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path (CVE-2026-71560) | HOL Guard CVE

Critical · CVSS 9.1CVE-2026-71560

Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path

Answer in brief

CVE-2026-71560 records a Critical severity (CVSS 9.1) vulnerability in Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Fory (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 7, 2026Updated Aug 8, 2026Source checked Sep 21, 2026First seen by HOL Aug 7, 2026Material review Aug 8, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.1
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache Fory (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:apache:fory::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Apache Software Foundation/Apache Forygeneric	>=0.14.0 <1.5.0	1.5.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Fory.
Review the reported fix. Update Apache Software Foundation/Apache Fory to 1.5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 7, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.