Remote Code Execution Vulnerability in Apache MINA Codec Module
CVE-2026-118636

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Mina
Vendor
CVE Published:
31 October 2026

What is CVE-2026-118636?

The JavaNativeMessageDecoder in the Apache MINA 3.0 codec module is susceptible to a serious vulnerability. The module utilizes ObjectInputStream.readObject() on incoming frame bytes without proper class filtering. This oversight allows an application positioned in front of an untrusted peer to be exploited, potentially leading to remote code execution through gadget chains. As the 3.0.0 branch of Apache MINA is no longer actively maintained, users are strongly advised to transition to the more secure Apache MINA 2.2.X branch to mitigate this risk.

Affected Version(s)

Apache MINA 3.0.0 <= 3.0.0-M2

References

https://www.cve.org/CVERecord?id=CVE-2026-118636
third-party-advisory
https://lists.apache.org/thread.html/h76nwcrkvsffhsk2kq6c...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nguyen Cuong (cuongbeo090704@gmail.com)
.