CVE-2016-10920

GNUCommerce < 0.5.7-BETA - Cross-Site Scripting

2016-04-26 00:00

Strategic Overview

Status: Patched in 0.5.7-beta
Affected Plugin: GNUCommerce
Affected Version: < 0.5.7-beta
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2016-10920

At a glance

CVE-2016-10920 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the GNUCommerce WordPress plugin, affecting versions < 0.5.7-beta. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 0.5.7-beta; sites on affected versions should update now. Disclosed April 2016.

Vulnerability Overview

The gnucommerce plugin before 0.5.7-BETA for WordPress has XSS.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in GNUCommerce < 0.5.7-beta takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For GNUCommerce the fix is 0.5.7-beta: builds < 0.5.7-beta are affected, anything from 0.5.7-beta onward is not.

Remediation

Update to version 0.5.7-beta, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to GNUCommerce: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: GNUCommerce 0.5.7-beta closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2016-10920 https://www.wordfence.com/threat-intel/vulnerabilities/id/a5e6817c-02e7-4d28-9446-c316a9ff8cbe https://nvd.nist.gov/vuln/detail/CVE-2016-10920

Related records

Same weakness class

Other vulnerabilities in GNUCommerce

9.8CVE-2025-30985: GNUCommerce <= 1.5.4 PHP Object InjectionCVE-2025-30985

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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