SB2026082552 - Multiple vulnerabilities in Apache Fory

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026082552

SB2026082552 - Multiple vulnerabilities in Apache Fory

Published: August 25, 2026

Security Bulletin ID SB2026082552
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Deserialization of Untrusted Data (CVE-ID: CVE-2026-71559)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to deserialization of untrusted data in the Go meta-string decoder when processing crafted data containing malformed type metadata. A remote attacker can supply crafted data to cause a denial of service.

Only the Go implementation is affected.


2) Type Confusion (CVE-ID: CVE-2026-71558)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code or cause a denial of service.

The vulnerability exists due to heap type confusion in C++ polymorphic smart-pointer deserialization when parsing a crafted input payload. A remote attacker can send a specially crafted payload to execute arbitrary code or cause a denial of service.

Only applications using C++ polymorphic smart-pointer deserialization are affected.


3) Out-of-bounds read (CVE-ID: CVE-2026-71560)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.

The vulnerability exists due to out-of-bounds read in the tagged-int fast-path deserializer in the Apache Fory C++ struct deserializer when deserializing structs containing tagged integer fields from a crafted input payload. A remote attacker can supply a specially crafted input payload to disclose sensitive information or cause a denial of service.

Only applications using Apache Fory C++ deserialization of structs containing tagged integer fields are affected.


Remediation

Install update from vendor's website.

References