SB2022082560 - Improper access control in Zulip Server
Published: August 25, 2022 Updated: August 11, 2026
Security Bulletin ID
SB2022082560
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2022-36048)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the image proxy when requesting external images. A remote user can cause requests to bypass the image proxy to disclose sensitive information.
The issue results in an IP address leak.
Remediation
Install update from vendor's website.