CVE-2026-24050
Medium
Description
Zulip is an open-source team collaboration tool. From 5.0 to before 11.5, some administrative actions on the user profile were susceptible to stored XSS in group names or channel names. Exploiting these vulnerabilities required the user explicitly interacting with the problematic object. This vulnerability is fixed in 11.5.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Zulip Server
PublishedFeb 6, 2026
First seenFeb 6, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- zulip zulip_server11.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zulip zulip_server | 5.0 ≤ v < 11.5 | 11.5 |
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