CVE-2026-24050 Zulip affected by Stored XSS in user profile modal
Attackers can inject malicious scripts into user profile modals via group or channel names, potentially compromising user accounts.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-24050?
CVE-2026-24050 is a low-severity cross-site scripting vulnerability in zulip, published on 6 Feb 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-24050?
It affects 1 product.
Products include Zulip Zulip Server.
How do I fix CVE-2026-24050?
No fix has been published for CVE-2026-24050 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-24050 being exploited?
There is no known exploitation of CVE-2026-24050 in the wild and no public exploit code.
Other vulnerabilities in zulip
- CVE-2019-18933 Information disclosure in n/a
- CVE-2020-15070 Code injection in n/a
- CVE-2017-0910 Missing authorization in Zulip Server
- CVE-2025-31478 Zulip Authentication Backend Configuration Bypass
- CVE-2023-33186 Cross-site scripting vulnerability in Zulip Server development branch via topic tooltip
Sources
Also known as GHSA-56qv-8823-6fq9.