What’s Vulnerable › Vulnerabilities

CVE-2021-42088

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-07 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.

Affected products

• zammad: before 4.1.1 — fixed in 4.1.1

How to fix

Upgrade to a fixed version: zammad 4.1.1. Check the vendor advisory for mitigations.

References

• https://zammad.com/en/advisories/zaa-2021-12
• https://zammad.com/en/advisories/zaa-2021-12

Get alerted when CVE-2021-42088 or the next vulnerability affects your stack