#VU107978 Incorrect Regular Expression in parse-link-header - CVE-2021-23490
Published: April 28, 2025
Vulnerability identifier: #VU107978
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-23490
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
parse-link-header
parse-link-header
Software vendor:
thlorenz
thlorenz
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..