CVE-2012-6556

FirstLastNames 1.1.1 - Cross-Site Scripting via User FirstName or LastName Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2012-6556. PoCs published by Henry Hoggard.

AI-analyzed exploit summary This is a writeup describing a persistent XSS vulnerability in the Vanilla FirstLastNames plugin version 1.3.2. The exploit involves injecting a malicious script into the first or last name field of a user profile, which executes when another user visits the profile page.

Description

Multiple cross-site scripting (XSS) vulnerabilities in the FirstLastNames plugin 1.1.1 for Vanilla Forums allow remote attackers to inject arbitrary web script or HTML via the (1) User/FirstName or (2) User/LastName parameter to the edit user page. NOTE: some of these details are obtained from third party information.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Henry Hoggard · textwebappsphp
https://www.exploit-db.com/exploits/18912

This is a writeup describing a persistent XSS vulnerability in the Vanilla FirstLastNames plugin version 1.3.2. The exploit involves injecting a malicious script into the first or last name field of a user profile, which executes when another user visits the profile page.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Vanilla Version 2.0.18.4 + FirstLastNames 1.3.2
Auth required
Prerequisites: Access to edit a user profile · Victim must visit the attacker's profile page
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Various Sources x_refsource_misc
http://www.henryhoggard.co.uk/security/197
Exploit, Third Party Advisory exploit x_refsource_exploit-db
http://www.exploit-db.com/exploits/18912
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/53637
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/49215

Scores

EPSS 0.0171
EPSS Percentile 74.6%

Details

CWE
CWE-79
Status published
Products (1)
jspautsch/firstlastnames 1.1.1
Published May 23, 2013
Tracked Since Feb 18, 2026