Description
The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.
Remediation
References
Related Vulnerabilities
Jenkins Inadequate Encryption Strength Vulnerability (CVE-2017-2598)
Envoy Proxy Memory Allocation with Excessive Size Value Vulnerability (CVE-2026-49975)
WordPress 6.3.x Cross-Site Scripting (6.3 - 6.3.3)
WordPress Plugin Easy SVG Support Cross-Site Scripting (3.2.0)
XWiki Credentials Management Errors Vulnerability (CVE-2005-4862)