CVE-2021-35303

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CVSS 3.1

6.1 medium

EPSS

<1%p55

Published

Jun 28, 2021 (Jun 28, 2021)

Modified

Jun 17, 2026

Description

Cross Site Scripting (XSS) in Zammad 1.0.x up to 4.0.0 allows remote attackers to execute arbitrary web script or HTML via the User Avatar attribute.

Vendors: zammad
Products: zammad
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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