CVE-2020-7776 HIGH

CVE-2020-7776: Cross-site Scripting (XSS)

Vendor N/A
Product phpoffice/phpspreadsheet
Published December 9, 2020
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C

What the vulnerability does

01Description

This affects the package phpoffice/phpspreadsheet from 0.0.0. The library is vulnerable to XSS when creating an html output from an excel file by adding a comment on any cell. The root cause of this issue is within the HTML writer where user comments are concatenated as part of link and this is returned as HTML. A fix for this issue is available on commit 0ed5b800be2136bcb8fa9c1bdf59abc957a98845/master branch.

Key dates

02Disclosure timeline

December 9, 2020 CVE published
September 16, 2024 Record updated