CVE-2026-123622 Usermin through 2.570 XSS via mailbox detach.cgi type Parameter
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123622?
CVE-2026-123622 is a medium-severity vulnerability in webmin usermin, published on 6 Nov 2026.
Official description
Usermin through 2.570 contains a cross-site scripting vulnerability in mailbox/detach.cgi that allows remote attackers to execute script by supplying an arbitrary type parameter that bypasses JavaScript filtering. Attackers can email an HTML attachment containing script and lure recipients to a detach.cgi link with type=text/html to run script in the victim's authenticated Usermin session.
Weakness: CWE-79
Which versions are affected by CVE-2026-123622?
How do I fix CVE-2026-123622?
No fix has been published for CVE-2026-123622 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123622 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123622 exists.
Sources
Also known as GHSA-pqrp-xhqp-wc9w.