CVE-2024-45046 MEDIUM

CVE-2024-45046: PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via style information

Vendor Phpoffice
Product PhpSpreadsheet
Weakness CWE-79 · XSS
Published August 28, 2024
Last update August 29, 2024
View on NVD All CVEs

CVSS base score

5.4/10
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:N

What the vulnerability does

01Description

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions `\PhpOffice\PhpSpreadsheet\Writer\Html` doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker may used a crafted spreadsheet to fully takeover a session of a user viewing spreadsheet files as HTML. This issue has been addressed in release version 2.1.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Key dates

02Disclosure timeline

August 28, 2024 CVE published
August 29, 2024 Record updated