CVE-2026-25742

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

CVE-2026-25742

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

CVE-2026-25742

Zulip CVE-2026-25742 affects versions before 11.6. Before 11.6, even with spectator access disabled (enable_spectator_access / WEB_PUBLIC_STREAMS_ENABLED), attachments from web-public streams could be retrieved anonymously, and the endpoint /users/me//topics remained reachable to expose topic his...

CVE-2026-25742 Zulip: Anonymous File Access After Disabling Spectator Access

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

CVE-2026-25742

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

CVE-2026-25742 Zulip: Anonymous File Access After Disabling Spectator Access

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

CVE-2026-25742: Missing Authorization

Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access enablespectatoraccess / WEBPUBLICSTREAMSENABLED is disabled, attachments originating from web-public...

PT-2026-30211

Name of the Vulnerable Software and Affected Versions Zulip versions 1.4.0 through 11.5 Description An issue exists where attachments from web-public streams remain accessible anonymously even after spectator access is disabled via enable spectator access or WEB PUBLIC STREAMS ENABLED...