CVE-2024-45292

PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. `\PhpOffice\PhpSpreadsheet\Writer\Html` does not sanitize "javascript:" URLs from hyperlink `href` attributes, resulting in a Cross-Site Scripting vulnerability. This issue has been addressed in release versions 1.29.2, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

PHPOffice · PhpSpreadsheet

CVSS v4.0 GitHub

4.8 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS v3.1 NVD

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

EPSS

0.34% chance of exploitation in the next 30 days, 26th percentile

Published

2024-10-07

Proof-of-concept exploits (2)

• PHPOffice/PhpSpreadsheet/security/advisories/GHSA-r8w8-74ww-j4wh
• advisories/GHSA-r8w8-74ww-j4wh

References

• CVE Record
• NVD entry