CVE-2018-11775
Improper Certificate Validation in Apache activemq-client
CVE-2018-11775 is a high vulnerability (CVSS 7.4) in Apache Activemq, published September 10, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.96%, the 94th percentile. Fixed in org.apache.activemq:activemq-client 5.15.6.
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
CVE-2018-11775- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
CVE-2018-11775- Updated
- 2026-11-02
EUVDEUVD-2018-0638 No score
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
EUVD-2018-0638- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m9w8-v359-9ffr
Improper Certificate Validation in Apache activemq-client
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
GHSA-m9w8-v359-9ffr- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
OSV
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
CVE-2018-11775- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-11775
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
DEBIAN-CVE-2018-11775- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-m9w8-v359-9ffr
Improper Certificate Validation in Apache activemq-client
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
GHSA-m9w8-v359-9ffr- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-11775
TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.
- Record
UBUNTU-CVE-2018-11775- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVUSN-6910-1 No score
activemq vulnerabilities
Chess Hazlett discovered that Apache ActiveMQ incorrectly handled certain commands. A remote attacker could possibly use this issue to terminate the program, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2015-7559)
Peter Stöckli discovered that Apache ActiveMQ incorrectly handled hostname verification. A remote attacker could possibly use this issue to perform a person-in-the-middle attack. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-11775)
Jonathan Gallimore and Colm Ó hÉigeartaigh discovered that Apache ActiveMQ incorrectly handled authentication in certain functions. A remote attacker could possibly use this issue to perform a person-in-the-middle attack. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-13920)
Gregor Tudan discovered that Apache ActiveMQ incorrectly handled LDAP authentication. A remote attacker could possibly use this issue to acquire unauthenticated access. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-26117)
It was discovered that Apache ActiveMQ incorrectly handled authentication. A remote attacker could possibly use this issue to run arbitrary code. (CVE-2022-41678)
It was discovered that Apache ActiveMQ incorrectly handled deserialization. A remote attacker could possibly use this issue to run arbitrary shell commands. (CVE-2023-46604)
- Record
USN-6910-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.activemq:activemq-clientMaven |
before 5.15.6 | 5.15.6 |
activemqDebian:12 |
before 5.15.6-1 | 5.15.6-1 |
activemqDebian:13 |
before 5.15.6-1 | 5.15.6-1 |
activemqDebian:9 |
before 5.14.3-3+deb9u2, plus listed versions 5.14.3-35.14.3-3+deb9u1 |
5.14.3-3+deb9u2 |
org.apache.activemq:activemq-clientMaven |
before 5.15.6, plus listed versions 5.10.05.10.15.10.25.11.05.11.1 Show 28 moreShow less5.11.25.11.35.11.45.12.05.12.15.12.25.12.35.13.05.13.15.13.25.13.35.13.45.13.55.14.05.14.15.14.25.14.35.14.45.14.55.15.05.15.15.15.25.15.35.15.45.15.55.8.05.9.05.9.1 |
5.15.6 |
activemqUbuntu:Pro:16.04:LTS |
before 5.13.2+dfsg-2ubuntu0.1~esm1, plus listed versions 5.6.0+dfsg1-4+deb8u1ubuntu15.6.0+dfsg1-55.13.2+dfsg-2 |
5.13.2+dfsg-2ubuntu0.1~esm1 |
activemqUbuntu:Pro:18.04:LTS |
before 5.15.8-2~18.04.1~esm1, plus listed versions 5.14.5-35.15.2-25.15.3-25.15.8-2~18.04 |
5.15.8-2~18.04.1~esm1 |
activemqUbuntu:Pro:20.04:LTS |
before 5.15.11-1ubuntu0.1~esm1, plus listed versions 5.15.10-15.15.11-1 |
5.15.11-1ubuntu0.1~esm1 |
activemqUbuntu:Pro:22.04:LTS |
before 5.16.1-1ubuntu0.1~esm1, plus listed versions 5.16.1-1 |
5.16.1-1ubuntu0.1~esm1 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
securitytracker.com/id/1041618
securityfocus.com/bid/105335
lists.apache.org/thread.html/2b5c0039197a4949f29e1e2c9441ab38d242946b966f61c110808bcc%40%3Ccommits.activemq.apache.org%3E
Show 31 moreShow less
access.redhat.com/errata/RHSA-2019:3892
oracle.com/security-alerts/cpuapr2020.html
activemq.apache.org/security-advisories.data/CVE-2018-11775-announcement.txt
lists.debian.org/debian-lts-announce/2021/03/msg00005.html
nvd.nist.gov/vuln/detail/CVE-2018-11775
github.com/advisories/GHSA-m9w8-v359-9ffr
issues.apache.org/jira/browse/AMQ-7047
security-tracker.debian.org/tracker/CVE-2018-11775
ubuntu.com/security/CVE-2018-11775
git-wip-us.apache.org/repos/asf?p=activemq.git;a=commit;h=bde7097fb8173cf871827df7811b3865679b963d
cve.org/CVERecord?id=CVE-2018-11775