CVE-2011-4957
WordPress Core < 3.1.1 - Denial of Service
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
La función make_clickable en wp-includes/formatting.php en WordPress antes de v3.1.1 no comprueba las URL correctamente antes de pasarlas a la biblioteca PCRE, lo que permite a atacantes remotos provocar una denegación de servicio (caída) a través de un comentario con una URL modificada que lanza muchas llamadas recursivas.
Several vulnerabilities were identified in Wordpress, a web blogging tool. As the CVEs were allocated from release announcements and specific fixes are usually not identified, it has been decided to upgrade the Wordpress package to the latest upstream version instead of backporting the patches.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2011-04-05 CVE Published
- 2011-12-23 CVE Reserved
- 2024-09-17 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://core.trac.wordpress.org/ticket/16892 | X_refsource_confirm | |
| http://wordpress.org/news/2011/04/wordpress-3-1-1 | X_refsource_confirm | |
| http://www.openwall.com/lists/oss-security/2012/04/19/17 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2012/04/19/6 | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://secunia.com/advisories/44038 | 2012-06-28 | |
| http://secunia.com/advisories/49138 | 2012-06-28 | |
| http://www.debian.org/security/2012/dsa-2470 | 2012-06-28 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | <= 3.1 Search vendor "Wordpress" for product "Wordpress" and version " <= 3.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 0.71 Search vendor "Wordpress" for product "Wordpress" and version "0.71" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.0 Search vendor "Wordpress" for product "Wordpress" and version "1.0" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.0.1 Search vendor "Wordpress" for product "Wordpress" and version "1.0.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.0.2 Search vendor "Wordpress" for product "Wordpress" and version "1.0.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.1.1 Search vendor "Wordpress" for product "Wordpress" and version "1.1.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2 Search vendor "Wordpress" for product "Wordpress" and version "1.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.1 Search vendor "Wordpress" for product "Wordpress" and version "1.2.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.2 Search vendor "Wordpress" for product "Wordpress" and version "1.2.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.3 Search vendor "Wordpress" for product "Wordpress" and version "1.2.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.4 Search vendor "Wordpress" for product "Wordpress" and version "1.2.4" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.5 Search vendor "Wordpress" for product "Wordpress" and version "1.2.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.2.5 Search vendor "Wordpress" for product "Wordpress" and version "1.2.5" | a |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.3 Search vendor "Wordpress" for product "Wordpress" and version "1.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.3.2 Search vendor "Wordpress" for product "Wordpress" and version "1.3.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.3.3 Search vendor "Wordpress" for product "Wordpress" and version "1.3.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5 Search vendor "Wordpress" for product "Wordpress" and version "1.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5.1 Search vendor "Wordpress" for product "Wordpress" and version "1.5.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5.1.1 Search vendor "Wordpress" for product "Wordpress" and version "1.5.1.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5.1.2 Search vendor "Wordpress" for product "Wordpress" and version "1.5.1.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5.1.3 Search vendor "Wordpress" for product "Wordpress" and version "1.5.1.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 1.5.2 Search vendor "Wordpress" for product "Wordpress" and version "1.5.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0 Search vendor "Wordpress" for product "Wordpress" and version "2.0" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.1 Search vendor "Wordpress" for product "Wordpress" and version "2.0.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.2 Search vendor "Wordpress" for product "Wordpress" and version "2.0.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.4 Search vendor "Wordpress" for product "Wordpress" and version "2.0.4" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.5 Search vendor "Wordpress" for product "Wordpress" and version "2.0.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.6 Search vendor "Wordpress" for product "Wordpress" and version "2.0.6" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.7 Search vendor "Wordpress" for product "Wordpress" and version "2.0.7" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.8 Search vendor "Wordpress" for product "Wordpress" and version "2.0.8" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.9 Search vendor "Wordpress" for product "Wordpress" and version "2.0.9" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.10 Search vendor "Wordpress" for product "Wordpress" and version "2.0.10" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.0.11 Search vendor "Wordpress" for product "Wordpress" and version "2.0.11" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.1 Search vendor "Wordpress" for product "Wordpress" and version "2.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.1.1 Search vendor "Wordpress" for product "Wordpress" and version "2.1.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.1.2 Search vendor "Wordpress" for product "Wordpress" and version "2.1.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.1.3 Search vendor "Wordpress" for product "Wordpress" and version "2.1.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.2 Search vendor "Wordpress" for product "Wordpress" and version "2.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.2.1 Search vendor "Wordpress" for product "Wordpress" and version "2.2.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.2.2 Search vendor "Wordpress" for product "Wordpress" and version "2.2.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.2.3 Search vendor "Wordpress" for product "Wordpress" and version "2.2.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.3 Search vendor "Wordpress" for product "Wordpress" and version "2.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.3.1 Search vendor "Wordpress" for product "Wordpress" and version "2.3.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.3.2 Search vendor "Wordpress" for product "Wordpress" and version "2.3.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.3.3 Search vendor "Wordpress" for product "Wordpress" and version "2.3.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.5 Search vendor "Wordpress" for product "Wordpress" and version "2.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.5.1 Search vendor "Wordpress" for product "Wordpress" and version "2.5.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.6 Search vendor "Wordpress" for product "Wordpress" and version "2.6" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.6.1 Search vendor "Wordpress" for product "Wordpress" and version "2.6.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.6.2 Search vendor "Wordpress" for product "Wordpress" and version "2.6.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.6.3 Search vendor "Wordpress" for product "Wordpress" and version "2.6.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.6.5 Search vendor "Wordpress" for product "Wordpress" and version "2.6.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.7 Search vendor "Wordpress" for product "Wordpress" and version "2.7" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.7.1 Search vendor "Wordpress" for product "Wordpress" and version "2.7.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8 Search vendor "Wordpress" for product "Wordpress" and version "2.8" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.1 Search vendor "Wordpress" for product "Wordpress" and version "2.8.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.2 Search vendor "Wordpress" for product "Wordpress" and version "2.8.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.3 Search vendor "Wordpress" for product "Wordpress" and version "2.8.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.4 Search vendor "Wordpress" for product "Wordpress" and version "2.8.4" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.4 Search vendor "Wordpress" for product "Wordpress" and version "2.8.4" | a |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.5 Search vendor "Wordpress" for product "Wordpress" and version "2.8.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.5.1 Search vendor "Wordpress" for product "Wordpress" and version "2.8.5.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.5.2 Search vendor "Wordpress" for product "Wordpress" and version "2.8.5.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.8.6 Search vendor "Wordpress" for product "Wordpress" and version "2.8.6" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.9 Search vendor "Wordpress" for product "Wordpress" and version "2.9" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.9.1 Search vendor "Wordpress" for product "Wordpress" and version "2.9.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.9.1.1 Search vendor "Wordpress" for product "Wordpress" and version "2.9.1.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 2.9.2 Search vendor "Wordpress" for product "Wordpress" and version "2.9.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0 Search vendor "Wordpress" for product "Wordpress" and version "3.0" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.1 Search vendor "Wordpress" for product "Wordpress" and version "3.0.1" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.2 Search vendor "Wordpress" for product "Wordpress" and version "3.0.2" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.3 Search vendor "Wordpress" for product "Wordpress" and version "3.0.3" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.4 Search vendor "Wordpress" for product "Wordpress" and version "3.0.4" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.5 Search vendor "Wordpress" for product "Wordpress" and version "3.0.5" | - |
Affected
| ||||||
| Wordpress Search vendor "Wordpress" | Wordpress Search vendor "Wordpress" for product "Wordpress" | 3.0.6 Search vendor "Wordpress" for product "Wordpress" and version "3.0.6" | - |
Affected
| ||||||