CVE-2023-47642

MEDIUM EPSS 37.7%
Published Nov 16, 20232y ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Nov 16, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

Zulip is an open-source team collaboration tool. It was discovered by the Zulip development team that active users who had previously been subscribed to a stream incorrectly continued being able to use the Zulip API to access metadata for that stream. As a result, users who had been removed from a stream, but still had an account in the organization, could still view metadata for that stream (including the stream name, description, settings, and an email address used to send emails into the stream via the incoming email integration). This potentially allowed users to see changes to a stream’s metadata after they had lost access to the stream. This vulnerability has been addressed in version 7.5 and all users are advised to upgrade. There are no known workarounds for this issue.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
37.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 1

VendorProductVersionRange
zulipzulip_server*≥1.3.0  –  <7.5

References 2

  • github.com https://github.com/zulip/zulip/commit/6336322d2f9bbccaacfc80cba83a3c62eefd5737
    Patch
  • github.com https://github.com/zulip/zulip/security/advisories/GHSA-c9wc-65fh-9x8p
    Vendor Advisory

Remediation

  • github.com https://github.com/zulip/zulip/commit/6336322d2f9bbccaacfc80cba83a3c62eefd5737
    Patch