Cross-site scripting vulnerability in Zulip Server development branch via topic tooltip
CVE-2023-33186

6.1MEDIUM

Key Information:

Vendor

zulip

Status
zulip
Vendor
CVE Published:
30 May 2023

What is CVE-2023-33186?

Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. The main development branch of Zulip Server from May 2, 2023 and later, including beta versions 7.0-beta1 and 7.0-beta2, is vulnerable to a cross-site scripting vulnerability in tooltips on the message feed. An attacker who can send messages could maliciously craft a topic for the message, such that a victim who hovers the tooltip for that topic in their message feed triggers execution of JavaScript code controlled by the attacker.

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Deploy the Patch

Affected Version(s)

zulip >= 7.0-beta1, < 7.0-beta3

References

https://github.com/zulip/zulip/security/advisories/GHSA-4...
x_refsource_CONFIRM
https://github.com/zulip/zulip/pull/25370
x_refsource_MISC
https://github.com/zulip/zulip/commit/03cfb3d9fe61c975d13...
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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