CVE-2025-30540 MEDIUM

CVE-2025-30540: WordPress AvaiBook plugin <= 1.2 - Cross Site Scripting (XSS) vulnerability

Vendor Avaibook

Product AvaiBook

Weakness CWE-79 · XSS

Published March 24, 2025

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

5.9/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in avaibook AvaiBook avaibook allows Stored XSS.This issue affects AvaiBook: from n/a through <= 1.2.

Explanation of Vulnerability in Simple Terms

02Summary

AvaiBook versions 1.2 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated administrators to inject malicious scripts. The vulnerability requires user interaction—typically clicking a crafted link—and can affect other users' sessions and data. Site owners should update to a version newer than 1.2 as soon as a patch is available.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers and steal session data or modify page content.

Potential impact on your site

04Site Impact

Administrators' accounts could be compromised; user data and site content may be altered or exposed.

Conditions required to exploit

05Prerequisites

Attacker must have administrator privileges and the victim must click a malicious link or visit a compromised page.

Key dates

06Disclosure timeline

March 24, 2025 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-30540 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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