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…

PriorityP426medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

0.62%

45.1th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
zulip	zulip	—	—
zulip	zulip_server	—	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.