CVE-2024-47873

Severity CVSS v4.0:

Pending analysis

Type:

CWE-611 Improper Restriction of XML External Entity Reference ('XXE')

Publication date:

18/11/2024

Last modified:

07/03/2025

Description

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, prior to versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0, the regexes used in the `scan` method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing. An attacker can bypass the sanitizer and achieve an XML external entity attack. Versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0 fix the issue.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:phpoffice:phpspreadsheet::::::::		1.29.4 (excluding)
cpe:2.3:a:phpoffice:phpspreadsheet::::::::	2.0.0 (including)	2.1.3 (excluding)
cpe:2.3:a:phpoffice:phpspreadsheet::::::::	2.2.0 (including)	2.3.2 (excluding)
cpe:2.3:a:phpoffice:phpspreadsheet::::::::	3.3.0 (including)	3.4.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-47873

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools