SB2025020536 - Multiple vulnerabilities in Discourse

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Main Vulnerability Database SB2025020536

SB2025020536 - Multiple vulnerabilities in Discourse

Published: February 5, 2025

Security Bulletin ID SB2025020536
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

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

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Cross-site scripting (CVE-ID: CVE-2024-53266)

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 topic titles 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.


2) Improper Preservation of Permissions (CVE-ID: CVE-2024-53994)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper preservation of permissions. A remote user with disable chat in preferences can still be reachable in some cases.


3) Input validation error (CVE-ID: CVE-2024-53851)

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

The vulnerability exists due to insufficient validation of user-supplied input in inline oneboxes. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References