CVE-2018-16586

Name: CVE-2018-16586
Creator: NVD / NIST
Published: 2018-09-28T00:29:01.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.49%

Last modified Jun 17, 2026

CVE-2018-16586 is a vulnerability of currently unknown severity. In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.

Metrics

EPSS Probability

1.49%

70.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Otrs	Open Ticket Request System	>= 4.0.0, < 4.0.32
Otrs	Open Ticket Request System	>= 5.0.0, < 5.0.30
Otrs	Open Ticket Request System	>= 6.0.0, < 6.0.11
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/Patch, Vendor Advisory
https://github.com/OTRS/otrs/commit/09e80c7752b0d9080688e4597c7495dd109e0963Patch
https://github.com/OTRS/otrs/commit/a808859a75c59ae3b7568f5cc4708c53462aa4c7Patch
https://github.com/OTRS/otrs/commit/baa92df09145b8ae2702a3a0e85d8ba55ec96302Patch
https://lists.debian.org/debian-lts-announce/2018/09/msg00033.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4317Third Party Advisory
https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/Patch, Vendor Advisory
https://github.com/OTRS/otrs/commit/09e80c7752b0d9080688e4597c7495dd109e0963Patch
https://github.com/OTRS/otrs/commit/a808859a75c59ae3b7568f5cc4708c53462aa4c7Patch
https://github.com/OTRS/otrs/commit/baa92df09145b8ae2702a3a0e85d8ba55ec96302Patch
https://lists.debian.org/debian-lts-announce/2018/09/msg00033.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4317Third Party Advisory

Timeline

Published: Sep 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16586?

How severe is CVE-2018-16586?

Severity scoring for CVE-2018-16586 is pending analysis. The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16586?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-16586?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST