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CVE-2011-5251

5.8 · MEDIUM

Open redirect vulnerability in forum/login.php in vBulletin 4.1.3 and earlier allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via the url parameter in…

Published Dec 31, 2012vbulletinCWE-20EPSS 1.53%

Overview

CVE-2011-5251 is a medium-severity vulnerability affecting vbulletin vbulletin. It was published on December 31, 2012 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Open redirect vulnerability in forum/login.php in vBulletin 4.1.3 and earlier allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via the url parameter in a lostpw action.

Remediation

Check the references section for vendor advisories and patches from vbulletin. Update vbulletin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
vbulletinvbulletin0Affected

References

Refwww.vbulletin.com/forum/showthread.php/381014-Potential-Phishing-Vector?p=2166441Refwww.vbulletin.com/forum/showthread.php/381014-Potential-Phishing-Vector?p=2166441

How CyberStrike helps

Frequently asked questions

What is CVE-2011-5251?

CVE-2011-5251 is a medium-severity vulnerability affecting vbulletin vbulletin. It was published on December 31, 2012 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

How severe is CVE-2011-5251?

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-5251?

Check the references section for vendor advisories and patches from vbulletin. Update vbulletin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-5251?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-5251 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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