CVE-2024-56412 - CVE House

Back to Database

Status published Medium CVE-2024-56412

PhpSpreadsheet vulnerable to bypass of the XSS sanitizer using the javascript protocol and special characters

4.8 CVSS

Vulnerability Description

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are vulnerable to bypass of the cross-site scripting sanitizer using the javascript protocol and special characters. An attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2024-56412

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from PHPOffice

View All →

PhpSpreadsheet vulnerable to SSRF when reading and displaying a processed HTML document in the browser

PHPOffice Math allows XXE when processing an XML file in the MathML format

Bypass XSS sanitizer using the javascript protocol and special characters in phpoffice/phpspreadsheet

Cross-Site Scripting (XSS) vulnerability in generateNavigation() function

PhpSpreadsheet has Cross-Site Scripting (XSS) vulnerability of the hyperlink base in the HTML page header

Affected Vendor

PHPOffice

View all reports →

Affected Software

PhpSpreadsheet

Vulnerable Versions:

>= 3.0.0, < 3.7.0, < 1.29.7, >= 2.0.0, < 2.1.6, >= 2.2.0, < 2.3.5

Timeline

Official Publish: January 3rd, 2025

Last Modified: January 3rd, 2025

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement