SB2026082558 - Multiple vulnerabilities in Apache Fory

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Main Vulnerability Database SB2026082558

SB2026082558 - Multiple vulnerabilities in Apache Fory

Published: August 25, 2026

Security Bulletin ID SB2026082558
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2026-64609)

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:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in readAlignedVarUint() when processing out-of-band zero-copy java deserialization data. A remote attacker can supply crafted serialized input to disclose sensitive information.

Only applications that use the opt-in out-of-band zero-copy deserialization feature are affected.


2) Type Confusion (CVE-ID: CVE-2026-64608)

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 read or write out-of-bounds memory.

The vulnerability exists due to type confusion and out-of-bounds read/write in the C++ compatible-mode field-skip paths when deserializing crafted data with an inconsistent schema. A remote attacker can supply specially crafted serialized input to read or write out-of-bounds memory.

Only the C++ implementation is affected.


3) Improper access control (CVE-ID: CVE-2026-64606)

CWE-ID: CWE-284 - Improper Access Control

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


The vulnerability allows a remote attacker to bypass class-registration checks during deserialization.

The vulnerability exists due to improper access control in Java lambda deserialization when processing untrusted serialized data. A remote attacker can supply a specially crafted serialized lambda to bypass class-registration checks during deserialization.

Only the lambda capture class is affected.


4) Use-after-free (CVE-ID: CVE-2026-60080)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to use-after-free in the Rust deserialization logic when parsing a crafted Fory payload. A remote attacker can send a crafted payload to cause a denial of service or disclose sensitive information.

The issue may also result in undefined behavior.


Remediation

Install update from vendor's website.

References