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Vulnerability record · CVE-2019-0231 · published 1 October 2019

CVE-2019-0231: Apache mina cleartext transmission vulnerability

Apache · Mina

Handling of the close_notify SSL/TLS message does not lead to a connection closure, leading the server to retain the socket opened and to have the client potentially receive clear text messages afterward. Mitigation: 2.0.20 users should migrate to 2.0.21, 2.1.0 users should migrate to 2.1.1. This issue affects: Apache MINA.

7.5 CVSS 3.1 High EPSS 2.1% · top 18.8% CWE-319 · Cleartext transmission
7.5CVSS 3.1 base score, v2 5.0
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Handling of the close_notify SSL/TLS message does not lead to a connection closure, leading the server to retain the socket opened and to have the client potentially receive clear text messages afterward. Mitigation: 2.0.20 users should migrate to 2.0.21, 2.1.0 users should migrate to 2.1.1. This issue affects: Apache MINA.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://mina.apache.org/mina-project/index.html#mina-211-mina-2021-released-posted-on-april-14-2019 Release NotesVendor Advisory
http://mina.apache.org/mina-project/index.html#mina-211-mina-2021-released-posted-on-april-14-2019 Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2024-52046Apache mina deserialization of untrusted data vulnerabilityThe ObjectSerializationDecoder in Apache MINA uses Java’s native deserialization protocol to process incoming serialized data but lacks the necessary…EPSS 24%9.8CVE-2026-47065Apache mina deserialization of untrusted data vulnerabilityZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialis…EPSS 0.50%9.8CVE-2026-42778Apache mina deserialization of untrusted data vulnerabilityThe fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Ap…EPSS 0.75%9.8CVE-2026-42779Apache mina deserialization of untrusted data vulnerabilityThe fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.r…EPSS 0.76%9.8CVE-2026-41409Apache mina deserialization of untrusted data vulnerabilityThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized …EPSS 0.75%9.8CVE-2026-41635Apache mina deserialization of untrusted data vulnerabilityApache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at …EPSS 0.82%6.5CVE-2021-41973Apache mina vulnerabilityIn Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the H…EPSS 4.6%

Source: NIST National Vulnerability Database (record CVE-2019-0231), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.