CVE-2011-4957 — Improper Input Validation in Wordpress

CWE-20 — Improper Input Validation4 documents4 sources
Severity
5.0MEDIUMNVD
EPSS
2.8%
top 13.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
WordpressDebian Wordpress
Timeline
PublishedJun 27
Latest updateMay 17

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.

CVSS vector

AV:N/AC:L/C:N/I:N/A:PExploitability: 10.0 | Impact: 2.9

Affected Packages3 packages

▶debiandebian/wordpress< wordpress 3.2.1+dfsg-1 (bookworm)
▶Debianwordpress/wordpress< 3.2.1+dfsg-1+3

🔴Vulnerability Details

2
GHSA
GHSA-mf9x-p929-vr83: The make_clickable function in wp-includes/formatting↗2022-05-17
▶
OSV
CVE-2011-4957: The make_clickable function in wp-includes/formatting↗2012-06-27
▶

📋Vendor Advisories

1
Debian
CVE-2011-4957: wordpress - The make_clickable function in wp-includes/formatting.php in WordPress before 3....↗2011
▶
CVE-2011-4957 — Improper Input Validation in Wordpress | cvebase