CVE-2021-42088
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because...
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
- Record
CVE-2021-42088- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
- Record
CVE-2021-42088- Updated
- 2026-11-02
EUVDEUVD-2021-29074 No score
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
- Record
EUVD-2021-29074- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-46v4-mjhv-j754 No score
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because...
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
- Record
GHSA-46v4-mjhv-j754- Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.
- Record
CVE-2021-42088- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42088 is a medium vulnerability (CVSS 6.1) in Zammad, published October 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. No source names a fixed version.