CVE-2026-24050— Zulip affected by Stored XSS in user profile modal
Quick assessment
Affected
zulip zulip
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Zulip是美国Zulip公司的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 Zulip 5.0至11.5之前版本存在跨站脚本漏洞，该漏洞源于用户配置文件上的某些管理操作对组名或频道名中的存储型跨站脚本攻击防护不足，可能导致存储型跨站脚本攻击。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-24050
Vulnerability Information
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Vulnerability Title
Zulip affected by Stored XSS in user profile modal
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Zulip 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zulip是美国Zulip公司的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 Zulip 5.0至11.5之前版本存在跨站脚本漏洞，该漏洞源于用户配置文件上的某些管理操作对组名或频道名中的存储型跨站脚本攻击防护不足，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-24050
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Vendor Pages for CVE-2026-24050 (1)
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Version history — Zulip 12.0-dev+git documentation x_refsource_MISC
IV. Related Vulnerabilities
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CVE-2026-40300
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CVE-2026-25741
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CVE-2025-52559
Zulip XSS in digest preview URL
Same vendor: zulip
-
CVE-2026-40300
Zulip: Message edit history visible in "moves only" policy t -
CVE-2026-26058
Zulip: Path Traversal in Import -
CVE-2026-25742
Zulip: Anonymous File Access After Disabling Spectator Acces -
CVE-2026-25741
Zulip Vulnerable to Modification of Payment Method (Stripe D -
CVE-2025-52559
Zulip XSS in digest preview URL
Same weakness: CWE-79
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OpenAM before 16.1.3 Latent XSS in SAML Load-Balancer Cookie -
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OpenAM before 16.1.3 Reflected XSS via OAuth2 Authorization
V. Comments for CVE-2026-24050
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