CVE-2026-24050

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/zulip/zulip/commit/e6093d9e4788f4d82236d856c5ed7b16767886a7	Patch
https://github.com/zulip/zulip/releases/tag/11.5	Release Notes
https://github.com/zulip/zulip/security/advisories/GHSA-56qv-8823-6fq9	Vendor Advisory
https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-11-5	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*

History

23 Feb 2026, 20:48

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
References	~~() https://github.com/zulip/zulip/commit/e6093d9e4788f4d82236d856c5ed7b16767886a7 -~~	() https://github.com/zulip/zulip/commit/e6093d9e4788f4d82236d856c5ed7b16767886a7 - Patch
References	~~() https://github.com/zulip/zulip/releases/tag/11.5 -~~	() https://github.com/zulip/zulip/releases/tag/11.5 - Release Notes
References	~~() https://github.com/zulip/zulip/security/advisories/GHSA-56qv-8823-6fq9 -~~	() https://github.com/zulip/zulip/security/advisories/GHSA-56qv-8823-6fq9 - Vendor Advisory
References	~~() https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-11-5 -~~	() https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-11-5 - Release Notes
First Time		Zulip zulip Server Zulip
CPE		cpe:2.3:a:zulip:zulip_server::::::::

06 Feb 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-06 19:16

Updated : 2026-02-23 20:48

NVD link : CVE-2026-24050

Mitre link : CVE-2026-24050

CVE.ORG link : CVE-2026-24050

JSON object : View

Products Affected

zulip

zulip_server

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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