Apache

CVE-2026-118636: Apache MINA: Unsafe Deserialization (CWE-502) in JavaNativeMessageDecoder

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 30 Oct 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

Not yet scored. FIRST's EPSS model has no score for this record as of 31 Oct 2026.

How severe?

9.8 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

3.0.0 through 3.0.0-M2

Versions by product

Source: CISA KEV 2026.10.30, as of 30 Oct 2026; FIRST EPSS, as of 31 Oct 2026; CVE List, as of 1 Nov 2026. About the data.

Description

Apache MINA: Unsafe Deserialization (CWE-502) in JavaNativeMessageDecoder

**UNSUPPORTED WHEN ASSIGNED** JavaNativeMessageDecoder in the MINA 3.0 codec module calls ObjectInputStream.readObject() on frame bytes with no class filter, so an application that puts it in front of an untrusted peer is open to gadget-chain RCE. As the 3.0.0 branch is inactive, we do not plan to release a version that fixes this issue. Users are recommended to use the latest Apache MINA 2.2.X branch.

Source: CVE List, as of 1 Nov 2026. About the data.

What to do

Advisories and patches

lists.apache.org (Vendor advisory)

This summary is based on the CVE record as of 1 Nov 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (1 product)

Apache Software Foundation Apache MINA
Status	Versions
Affected	3.0.0 through 3.0.0-M2

Versions not listed are: unaffected.

Source: CVE List, as of 1 Nov 2026. About the data.

Weakness

CWE-502

CWE-502

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

Date	Event
31 Oct 2026	CVE record published

References

cve.org (Third-party advisory)

Known exploited Apache vulnerabilities

CVE-2016-3081: Apache Struts Command Injection Vulnerability (added 8 Oct 2026)
CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability (added 4 Aug 2026)
CVE-2026-34197: Apache ActiveMQ Improper Input Validation Vulnerability (added 16 Apr 2026)
CVE-2024-38475: Apache HTTP Server Improper Escaping of Output Vulnerability (added 1 May 2025)
CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability (added 1 Apr 2025)