CVE-2026-115574
mediumZulip is an open-source team collaboration tool.
Zulip is an open-source team collaboration tool. From 11.0 until 12.2, organizations with web-public channels enabled exposed the GET /json/users endpoint to logged-out spectators, and a missing access-control check allowed include_custom_profile_fields=true to return every user's custom profile field values in addition to the documented limited directory data. This exposed those custom profile field values to unauthenticated visitors. This issue is fixed in version 12.2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/zulip/zulip/commit/6f33a8fa345ba776039a3f46131c253599a3ba15 security-advisories@github.com
- https://github.com/zulip/zulip/commit/774d4c7b12755178fa406f0c0f3b2cafdbbec32c security-advisories@github.com
- https://github.com/zulip/zulip/pull/39913 security-advisories@github.com
- https://github.com/zulip/zulip/releases/tag/12.2 security-advisories@github.com
- https://github.com/zulip/zulip/security/advisories/GHSA-3m37-hwq6-jrj8 security-advisories@github.com
- https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-12-2 security-advisories@github.com