CVE-2016-20066

Polls CP <= 1.0.8 - Cross-Site Request Forgery to Cross-Site Scripting

2026-06-15 00:00

Strategic Overview

Status: Patched in 1.0.9
Affected Plugin: Polls CP
Affected Version: <= 1.0.8
CVSS: 5.4Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2016-20066

At a glance

CVE-2016-20066 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Polls CP WordPress plugin, affecting versions <= 1.0.8. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.0.9; sites on affected versions should update now. Disclosed June 2026, reported by Joaquin Ramirez Martinez.

Vulnerability Overview

The Polls CP plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.8. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

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

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Polls CP <= 1.0.8 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Polls CP the fix is 1.0.9: builds <= 1.0.8 are affected, anything from 1.0.9 onward is not.

Remediation

Update to version 1.0.9, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Polls CP: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Polls CP 1.0.9 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2016-20066 https://www.wordfence.com/threat-intel/vulnerabilities/id/97628ee2-f7d9-4be5-8230-c38e531d1974 https://nvd.nist.gov/vuln/detail/CVE-2016-20066

Related records

Same weakness class

4.3CVE-2016-20067: Polls CP <= 1.0.8 Cross-Site Request ForgeryCVE-2016-20067

Other vulnerabilities in Polls CP

CVSS Vector

5.4

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

Base

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

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