CVE-2026-56731CWE-79cross-site-scripting

CVE-2026-56731

published September 25, 2026

CVSS
8.4
EPSS
0%
Percentile
14.6
In the wild
Unconfirmed
What it is

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, a low-privilege authenticated user may inject arbitrary HTML markup, including JavaScript event handlers, into a ticket title via the standard ticket creation workflow. The title is persisted without sanitization. This issue is fixed in version 7.0.1.

The record
Technical detail
CVSS
8.4 · NONE
CVSS v4.0
8.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00243 · 14.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-25T22:17Z
References (2)
https://github.com/zammad/zammad/commit/16a4a2e1be6642ec0c3ba3a76e358ad065f48f78 · [email protected]https://github.com/zammad/zammad/security/advisories/GHSA-p9xp-gx8r-4397 · [email protected]
EPSS history
Timeline
  • 27 SEP 03:26Z
    EPSS moved — → 0%
    epss
  • 25 SEP 17:04Z
    Zammad: Cross-Site Scripting in Ticket Notifications
    cvelistv5