PT-2026-30211

CVE-2026-25742

Published

2026-04-03

Updated

2026-07-24

Description by

CVSS 3.1

5.3

Medium

MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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. Additionally, the '/users/me//topics' endpoint remains reachable anonymously, allowing unauthorized retrieval of topic history for web-public streams.

Recommendations Update to version 11.6.

Exploitability

Exploit

Fix

Impacts

Researchers

Odgrso

Vendors

Affected products

Weakness enumeration

CWE-862: Missing Authorization

Related identifiers