8.2
HIGH
CVE-2023-33186
Zulip Cross Site Scripting Vulnerability
Description

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.

INFO

Published Date :

May 30, 2023, 6:16 a.m.

Last Modified :

Nov. 6, 2023, 7:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.3

Exploitability Score :

2.3
Affected Products

The following products are affected by CVE-2023-33186 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Zulip zulip_server
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-33186.

URL Resource
https://github.com/zulip/zulip/commit/03cfb3d9fe61c975d133121ec31a7357f0c9e18f
https://github.com/zulip/zulip/commit/3ca131743b00f42bad8edbac4ef92656d954c629 Patch
https://github.com/zulip/zulip/pull/25370 Issue Tracking Patch
https://github.com/zulip/zulip/security/advisories/GHSA-4r83-8f94-hrph Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-33186 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-33186 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 06, 2023

    Action Type Old Value New Value
    Removed Reference https://github.com/zulip/zulip/commit/903dbda79bd176702d3175a7c8a5450a64b6eccb [Patch]
  • CVE Modified by [email protected]

    Nov. 02, 2023

    Action Type Old Value New Value
    Added Reference https://github.com/zulip/zulip/commit/03cfb3d9fe61c975d133121ec31a7357f0c9e18f [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 06, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://github.com/zulip/zulip/commit/3ca131743b00f42bad8edbac4ef92656d954c629 No Types Assigned https://github.com/zulip/zulip/commit/3ca131743b00f42bad8edbac4ef92656d954c629 Patch
    Changed Reference Type https://github.com/zulip/zulip/commit/903dbda79bd176702d3175a7c8a5450a64b6eccb No Types Assigned https://github.com/zulip/zulip/commit/903dbda79bd176702d3175a7c8a5450a64b6eccb Patch
    Changed Reference Type https://github.com/zulip/zulip/pull/25370 No Types Assigned https://github.com/zulip/zulip/pull/25370 Issue Tracking, Patch
    Changed Reference Type https://github.com/zulip/zulip/security/advisories/GHSA-4r83-8f94-hrph No Types Assigned https://github.com/zulip/zulip/security/advisories/GHSA-4r83-8f94-hrph Vendor Advisory
    Added CWE NIST CWE-79
    Added CPE Configuration OR *cpe:2.3:a:zulip:zulip_server:7.0:beta1:*:*:*:*:*:* *cpe:2.3:a:zulip:zulip_server:7.0:beta2:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-33186 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-33186 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} 0.01%

score

0.44552

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability