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.

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History

Fri, 06 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 04 Nov 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Zulip
Zulip zulip
Vendors & Products Zulip
Zulip zulip

Wed, 04 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Zulip: Custom profile fields can be read by logged-out visitors in organization with web-public channels
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-05T19:19:30.152Z

Reserved: 2026-10-22T22:53:15.238Z

Link: CVE-2026-115574

cve-icon Vulnrichment

Updated: 2026-11-05T19:19:25.327Z

cve-icon NVD

Status : Received

Published: 2026-11-04T20:19:02.313

Modified: 2026-11-05T20:17:42.983

Link: CVE-2026-115574

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T21:00:18Z

Weaknesses