#VU49588 Cross-site scripting in redcarpet - CVE-2020-26298
Published: January 11, 2021 / Updated: January 18, 2021
Vulnerability identifier: #VU49588
Vulnerability risk: 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-2020-26298
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
redcarpet
redcarpet
Software vendor:
redcarpet
redcarpet
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. A remote attacker 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.
Remediation
Install updates from vendor's website.
External links
- https://github.com/advisories/GHSA-q3wr-qw3g-3p4h
- https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security
- https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793
- https://lists.debian.org/debian-lts-announce/2021/01/msg00014.html
- https://rubygems.org/gems/redcarpet
- https://www.debian.org/security/2021/dsa-4831