FKIE_CVE-2011-4957
Vulnerability from fkie_nvd - Published: 2012-06-27 21:55 - Updated: 2026-06-16 23:35
Severity
Summary
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
Impacted products
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"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "La funci\u00f3n 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 denegaci\u00f3n de servicio (ca\u00edda) a trav\u00e9s de un comentario con una URL modificada que lanza muchas llamadas recursivas."
}
],
"id": "CVE-2011-4957",
"lastModified": "2026-06-16T23:35:43.377",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-06-27T21:55:02.360",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://core.trac.wordpress.org/ticket/16892"
},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "http://secunia.com/advisories/44038"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/49138"
},
{
"source": "secalert@redhat.com",
"url": "http://wordpress.org/news/2011/04/wordpress-3-1-1/"
},
{
"source": "secalert@redhat.com",
"url": "http://www.debian.org/security/2012/dsa-2470"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2012/04/19/17"
},
{
"source": "secalert@redhat.com",
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://core.trac.wordpress.org/ticket/16892"
},
{
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"tags": [
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],
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},
{
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"tags": [
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],
"url": "http://secunia.com/advisories/49138"
},
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"url": "http://wordpress.org/news/2011/04/wordpress-3-1-1/"
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{
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"url": "http://www.debian.org/security/2012/dsa-2470"
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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