CVE-2026-118636
Apache MINA: Unsafe Deserialization (CWE-502) in JavaNativeMessageDecoder
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.
INFO
Published Date :
Oct. 31, 2026, 9:16 p.m.
Last Modified :
Oct. 31, 2026, 9:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | f0158376-9dc2-43b6-827c-5f631a4d8d09 | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Use the latest Apache MINA 2.2.X branch.
- Avoid using the MINA 3.0 codec module.
- Implement input validation for frame bytes.
- Consider alternative deserialization methods.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-118636.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread.html/h76nwcrkvsffhsk2kq6cjzc6srtnty7x | |
| https://www.cve.org/CVERecord?id=CVE-2026-118636 | |
| http://www.openwall.com/lists/oss-security/2026/10/31/3 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-118636 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-118636
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-118636 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-118636 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Oct. 31, 2026
Action Type Old Value New Value Added Tag unsupported-when-assigned Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-502 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/118xxx/CVE-2026-118636.json">CVE-2026-118636</a> Added Reference https://lists.apache.org/thread.html/h76nwcrkvsffhsk2kq6cjzc6srtnty7x Added Reference https://www.cve.org/CVERecord?id=CVE-2026-118636 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Oct. 31, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/10/31/3