CVE-2026-66690 HIGH

CVE-2026-66690: WordPress GiveWP plugin <= 4.16.5 - Cross Site Scripting (XSS) vulnerability

Vendor Nexcess

Product GiveWP

Weakness CWE-79 · XSS

Published August 6, 2026

Last update August 6, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in GiveWP <= 4.16.5 versions.

Explanation of Vulnerability in Simple Terms

02Summary

GiveWP versions up to 4.16.5 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability requires user interaction—typically clicking a malicious link—and can affect multiple users across the site. An attacker with no authentication can craft a payload that executes in victims' browsers, potentially stealing session data or performing actions on their behalf.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers when they visit a crafted link.

Potential impact on your site

04Site Impact

Site visitors can be redirected, have sessions hijacked, or be tricked into performing unwanted actions.

Conditions required to exploit

05Prerequisites

Victim must click a malicious link or visit an attacker-controlled page; no authentication required.

Key dates

06Disclosure timeline

August 6, 2026 CVE published

August 6, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-66690 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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