CVE-2022-23640 CRITICAL

CVE-2022-23640: Improper Restriction of XML External Entity Reference in Excel-Streaming-Reader

Vendor Monitorjbl
Product excel-streaming-reader
Weakness CWE-611 · XXE
Published March 2, 2022
Last update April 23, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Excel-Streaming-Reader is an easy-to-use implementation of a streaming Excel reader using Apache POI. Prior to xlsx-streamer 2.1.0, the XML parser that was used did apply all the necessary settings to prevent XML Entity Expansion issues. Upgrade to version 2.1.0 to receive a patch. There is no known workaround.

Key dates

02Disclosure timeline

March 2, 2022 CVE published
April 23, 2025 Record updated