Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80.

published 2019-07-16 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-1768

cvss: 6.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80. The impact is: Execute java script code on users browser. The component is: web app. The attack vector is: the victim must open a ticket. The fixed version is: 2.3.1, 2.2.2 and 2.1.3.

Patch / fix

links 2

github.com/zammad/zammad/compare/ea50d0c...238784d advisory
github.com/zammad/zammad/compare/5c983f6...1a9af7d advisory

Exploit prediction

1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.1	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Zammad GmbH Zammad

Classification

Weakness

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /zammad/zammad/compare/ea50d0c...238784d
patch, third-party-advisory
github.com /zammad/zammad/compare/5c983f6...1a9af7d
patch, third-party-advisory
github.com /zammad/zammad/issues/1869
third-party-advisory

Sources

CVE List CVE-2019-1010018
NVD CVE-2019-1010018

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary