Cross-site scripting in Comrak - CVE-2021-27671

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Main Vulnerability Database Vulnerabilities #VU79720

Cross-site scripting in Comrak - CVE-2021-27671

Published: August 20, 2023


Vulnerability identifier: #VU79720
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2021-27671
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Comrak
Software vendor:
Comrak Project

Description

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 passed via data: and javascript: URIs. A remote attacker can inject 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.


Remediation

Install updates from vendor's website.

External links