CVE-2011-4957

WordPress < 3.1.1 - Denial of Service via make_clickable URL Parsing

Title source: llm
STIX 2.1

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.

References (7)

Core 7
Core References
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2012/04/19/17
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/44038
Product x_refsource_confirm
http://core.trac.wordpress.org/ticket/16892
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/49138
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2012/04/19/6
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2012/dsa-2470

Scores

EPSS 0.0280
EPSS Percentile 86.3%

Details

CWE
CWE-20
Status published
Products (49)
wordpress/wordpress 0.71
wordpress/wordpress 1.0
wordpress/wordpress 1.0.1
wordpress/wordpress 1.0.2
wordpress/wordpress 1.1.1
wordpress/wordpress 1.2
wordpress/wordpress 1.2.1
wordpress/wordpress 1.2.2
wordpress/wordpress 1.2.3
wordpress/wordpress 1.2.4
... and 39 more
Published Jun 27, 2012
Tracked Since Feb 18, 2026