CVE-2026-115574

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 includecustomprofilefields=true to return every user's custom profile fie...

CVE-2026-115574 Zulip: Custom profile fields can be read by logged-out visitors in organization with web-public channels

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 includecustomprofilefields=true to return every user's custom profile fie...

CVE-2026-115574

The team collaboration tool Zulip versions 11.0 through 12.2 is vulnerable to an information disclosure flaw. When web-public channels are enabled, the GET /json/users endpoint is exposed to logged-out spectators. Due to a missing access-control check, unauthenticated visitors can use the include...