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A Reflected Cross-Site Scripting (XSS) vulnerability was discovered in the PDF Poster – PDF Embedder Plugin for WordPress, affecting versions up to and including 2.1.17. The vulnerability was reported on December 11, 2023, by researcher Le Ngoc Anh and was assigned CVE-2024-23508. The issue stems from insufficient input sanitization and output escaping in the plugin (Patchstack, WPScan).
The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) and has received varying CVSS scores: NIST assigned a base score of 6.1 (MEDIUM) with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N, while Patchstack rated it at 7.1 (HIGH) with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. The vulnerability allows unauthenticated attackers to inject arbitrary web scripts that execute when users perform specific actions (NVD, Patchstack).
If exploited, this vulnerability could allow malicious actors to inject malicious scripts, including redirects and advertisements, into the affected website. These injected scripts would execute when visitors access the site, potentially compromising user security and website integrity (Patchstack).
The vulnerability has been fixed in version 2.1.18 of the PDF Poster plugin. Users are advised to update to this version or later to remove the vulnerability. Patchstack users can enable auto-update functionality for vulnerable plugins (Patchstack).
Source: This report was generated using AI
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