CVE-2011-3865

Black-LetterHead < 1.6 - Cross-Site Scripting via PATH_INFO to index.php

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-3865. PoCs published by SiteWatch.

AI-analyzed exploit summary This exploit demonstrates a cross-site scripting (XSS) vulnerability in the Black-LetterHead theme for WordPress by injecting malicious script code via a crafted URL. The vulnerability arises from insufficient input sanitization, allowing arbitrary JavaScript execution in the context of the affected site.

Description

Cross-site scripting (XSS) vulnerability in the Black-LetterHead theme before 1.6 for WordPress allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to index.php.

Exploits (1)

exploitdb WORKING POC VERIFIED
by SiteWatch · textwebappsphp
https://www.exploit-db.com/exploits/36187

This exploit demonstrates a cross-site scripting (XSS) vulnerability in the Black-LetterHead theme for WordPress by injecting malicious script code via a crafted URL. The vulnerability arises from insufficient input sanitization, allowing arbitrary JavaScript execution in the context of the affected site.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Black-LetterHead theme for WordPress 1.5
No auth needed
Prerequisites: A vulnerable version of the Black-LetterHead theme installed on a WordPress site
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, URL Repurposed x_refsource_misc
https://sitewat.ch/en/Advisories/24

Scores

EPSS 0.0343
EPSS Percentile 87.4%

Details

CWE
CWE-79
Status published
Products (5)
ulyssesonline/black-letterhead 1.1
ulyssesonline/black-letterhead 1.2
ulyssesonline/black-letterhead 1.3
ulyssesonline/black-letterhead 1.4
ulyssesonline/black-letterhead < 1.5
Published Sep 28, 2011
Tracked Since Feb 18, 2026