CVE-2018-1000154

Name: CVE-2018-1000154
Creator: NVD / NIST
Published: 2018-04-05T13:29:00.95+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.60%

Last modified Jun 17, 2026

CVE-2018-1000154 is a vulnerability of currently unknown severity. Zammad GmbH Zammad version 2.3.0 and earlier contains a Improper Neutralization of Script-Related HTML Tags in a Web Page (CWE-80) vulnerability in the subject of emails which are not html quoted in certain cases. This can result in the embedding and execution of java script code on users browser. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

Zammad GmbH Zammad version 2.3.0 and earlier contains a Improper Neutralization of Script-Related HTML Tags in a Web Page (CWE-80) vulnerability in the subject of emails which are not html quoted in certain cases. This can result in the embedding and execution of java script code on users browser. This attack appear to be exploitable via the victim openning a ticket. This vulnerability appears to have been fixed in 2.3.1, 2.2.2 and 2.1.3.

Metrics

EPSS Probability

1.60%

72.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Zammad	Zammad	<= 2.3.0

References

https://github.com/zammad/zammad/issues/1869Third Party Advisory
https://zammad.com/news/release-2-4Vendor Advisory
https://zammad.com/news/security-advisory-zaa-2018-01Vendor Advisory
https://github.com/zammad/zammad/issues/1869Third Party Advisory
https://zammad.com/news/release-2-4Vendor Advisory
https://zammad.com/news/security-advisory-zaa-2018-01Vendor Advisory

Timeline

Published: Apr 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000154?

How severe is CVE-2018-1000154?

Severity scoring for CVE-2018-1000154 is pending analysis. The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000154?

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-2018-1000154?

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

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Source: NVD / NIST