Apache MINA: unsafe deserialization

Apache MINA 3.0.0-M2

Apache MINA JavaNativeMessageDecoder vulnerable to gadget-chain RCE via unsafe deserialization

Do this now

No fix yet: limit who can reach it.

First seen: 31 Oct 2026
Last update: 31 Oct 2026, 08:18 UTC
Identifiers: CVE-2026-118636 ID not published yet
Source: news

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Apache MINA: unsafe deserialization
Severity: unknown. Patch status: no fix yet.
Affected: Apache MINA 3.0.0-M2
Ids: CVE-2026-118636

Apache MINA JavaNativeMessageDecoder vulnerable to gadget-chain RCE via unsafe deserialization

## Steps
1. Search the repo, its CI and infra config for Apache MINA 3.0.0-M2. If present, report the version in use and whether it's affected.
2. There is no fix yet. Until one ships: restrict network access to it.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-118636") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://seclists.org/oss-sec/2026/q4/457
https://pwned.coffee/i/apache-mina-unsafe-deserialization-cve-2026-118636

Receipt

Exploitation: No known exploitation
Score: No CVSS published yet: severity unknown.
Last checked: 31 Oct 2026, 09:18 UTC

Sources: KEV – CVE record – Vendor –

Sources

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

Wrong fix version, or a source we missed? Send it back to chef@pwned.coffee with the source, and we'll correct it here.

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