Medium severity · published Jun 28, 2021
CVE-2021-35303
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
6.1
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
Zammad · Zammad
1.0.0 through 4.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-35303
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-35303
Vendor Advisory
https://zammad.com/en/advisories/zaa-2021-06
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