SB2023101944 - Multiple vulnerabilities in Discourse

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2023101944

SB2023101944 - Multiple vulnerabilities in Discourse

Published: October 19, 2023 Updated: December 17, 2025

Security Bulletin ID SB2023101944
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2023-44388)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


2) Improper access control (CVE-ID: CVE-2023-45147)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote user can create a topic and add arbitrary custom fields to a topic


3) Cross-site scripting (CVE-ID: CVE-2023-43659)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within email preview when CSP disabled. A remote user can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


4) Improper access control (CVE-ID: CVE-2023-43814)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can bypass implemented security restrictions and expose poll options and votes.


5) Information disclosure (CVE-ID: CVE-2023-45131)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application within new private chat messages. A remote attacker can gain unauthorized access to sensitive information on the system.


6) Information disclosure (CVE-ID: CVE-2023-44391)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application within the summary details. A remote attacker can gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References