CVE-2025-43840 HIGH

CVE-2025-43840: WordPress CheckBot plugin <= 1.05 - CSRF to Stored XSS vulnerability

Vendor Ref

Product CheckBot

Weakness CWE-352 · CSRF

Published May 19, 2025

Last update April 28, 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

Cross-Site Request Forgery (CSRF) vulnerability in ref CheckBot checkbot allows Stored XSS.This issue affects CheckBot: from n/a through <= 1.05.

Explanation of Vulnerability in Simple Terms

02Summary

CheckBot versions 1.05 and earlier are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in CheckBot user, performs unwanted actions on their behalf. The attack requires user interaction (visiting the malicious page) and can affect the confidentiality, integrity, and availability of the user's session.

What an attacker can do

03Attacker Capabilities

Perform unwanted actions on a CheckBot user's account by tricking them into visiting a malicious webpage.

Potential impact on your site

04Site Impact

Users of CheckBot versions 1.05 and earlier are at risk of account compromise through CSRF attacks.

Conditions required to exploit

05Prerequisites

The victim must be logged into CheckBot and visit an attacker-controlled webpage.

Key dates

06Disclosure timeline

May 19, 2025 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-43840 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/352.html AskarLabs — CWE-352 write-up Cross-Site Request Forgery

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