CVE-2023-45646 MEDIUM

CVE-2023-45646: WordPress PDF Block Plugin <= 1.1.0 is vulnerable to Cross Site Scripting (XSS)

Vendor Henryholtgeerts

Product PDF Block

Weakness CWE-79 · XSS

Published October 24, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Henryholtgeerts PDF Block plugin <= 1.1.0 versions.

Explanation of Vulnerability in Simple Terms

02Summary

PDF Block versions up to 1.1.0 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a malicious link or page that, when visited by another user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in other users' browsers to steal sessions or perform unauthorized actions.

Potential impact on your site

04Site Impact

Authenticated users' accounts and data are at risk if they interact with attacker-controlled content.

Conditions required to exploit

05Prerequisites

Attacker must have low-level authenticated access to the site; victim must visit a malicious link or page.

Key dates

06Disclosure timeline

October 24, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-45646 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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