Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during Java lambda deserialization. (CVE-2026-64606)
A deserialization vulnerability in Apache Fory prior to version 1.4.0 allows bypassing class-registration checks during Java lambda deserialization. This affects only the lambda capture class and can lead to critical impacts on confidentiality, integrity, and availability. The issue is fixed in version 1.4.0.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64606) involves deserialization of untrusted data in Apache Fory versions before 1.4.0. Specifically, it allows attackers to bypass class-registration checks during the deserialization of Java lambda expressions, affecting only the lambda capture class. This can lead to severe consequences including full compromise of the application due to arbitrary code execution or other malicious behavior. The vulnerability is classified under CWE-502 (Deserialization of Untrusted Data).
Potential Impact
Successful exploitation can result in complete compromise of confidentiality, integrity, and availability of the affected system, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). This means an unauthenticated remote attacker can exploit the vulnerability without user interaction, potentially executing arbitrary code or causing denial of service.
Mitigation Recommendations
Users should upgrade Apache Fory to version 1.4.0 or later, where this vulnerability has been fixed. No other mitigations are specified. Patch status is confirmed by the vendor advisory recommending upgrade to 1.4.0.
Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during Java lambda deserialization. (CVE-2026-64606)
Description
A deserialization vulnerability in Apache Fory prior to version 1.4.0 allows bypassing class-registration checks during Java lambda deserialization. This affects only the lambda capture class and can lead to critical impacts on confidentiality, integrity, and availability. The issue is fixed in version 1.4.0.
CVSS v3.1
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64606) involves deserialization of untrusted data in Apache Fory versions before 1.4.0. Specifically, it allows attackers to bypass class-registration checks during the deserialization of Java lambda expressions, affecting only the lambda capture class. This can lead to severe consequences including full compromise of the application due to arbitrary code execution or other malicious behavior. The vulnerability is classified under CWE-502 (Deserialization of Untrusted Data).
Potential Impact
Successful exploitation can result in complete compromise of confidentiality, integrity, and availability of the affected system, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). This means an unauthenticated remote attacker can exploit the vulnerability without user interaction, potentially executing arbitrary code or causing denial of service.
Mitigation Recommendations
Users should upgrade Apache Fory to version 1.4.0 or later, where this vulnerability has been fixed. No other mitigations are specified. Patch status is confirmed by the vendor advisory recommending upgrade to 1.4.0.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qwm7-r3rv-3hw8
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64606"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a5fd15c1010f89cc21ca17a
Added to database: 07/21/2026, 20:06:52 UTC
Last enriched: 07/21/2026, 20:20:22 UTC
Last updated: 07/21/2026, 20:58:54 UTC
Views: 2
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