CVE-2026-24050

EUVD-2026-5640
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
Common Weakness Enumeration
References
https://github.com/zulip/zulip/commit/e6093d9e4788f4d82236d856c5ed7b16767886a7
https://github.com/zulip/zulip/releases/tag/11.5
https://github.com/zulip/zulip/security/advisories/GHSA-56qv-8823-6fq9
https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-11-5