CVE-2018-1000154

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-05 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

zammad: through 2.3.0

References

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

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