CVE-2026-118636 Apache MINA - Insecure Deserialization

Apache MINA 3.0 codec module contains an insecure deserialization vulnerability caused by JavaNativeMessageDecoder calling ObjectInputStream.readObject() without a class filter, letting attackers execute remote code via crafted frames, exploit requires untrusted peer interaction.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Insecure Deserialization
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
31 October 2026
Updated
1 November 2026
Weakness
CWE-502

Vendor fix

Use the latest Apache MINA 2.2.X branch as 3.0.0 branch is inactive and no fix will be released.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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