CVE-2026-118636
Critical
Description
**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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductApache MINA
PublishedOct 31, 2026
First seenNov 4, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Software Foundation Apache MINA | 3.0.0 ≤ v ≤ 3.0.0-M2 | — |
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