Is CVE-2011-3856 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2011-3856, but active exploitation has not been confirmed.

Can CVE-2011-3856 be exploited remotely?

Yes. CVE-2011-3856 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2011-3856?

CVE-2011-3856 has a CVSS score of 4.3 (MEDIUM).

HOME VULNERABILITIESCVE-2011-3856

MEDIUMPOC

CVE-2011-3856

CWE-79Published: September 28, 2011· Updated: Jun 16, 2026

4.3

CVSS v3.1

Official Description

Cross-site scripting (XSS) vulnerability in the Elegant Grunge theme before 1.0.4 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.

NVD Source

Technical Analysis

CVE-2011-3856 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2011-3856. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.