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

Quick assessment

Affected
n/a phpoffice/phpspreadsheet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHPOffice PhpSpreadsheet是一款用于读取和写入电子表格文件的PHP库。 phpoffice/phpspreadsheet 0.0.0版本存在安全漏洞，该漏洞源于从0.0.0影响包phpoffice phpspreadsheet。当通过在任何单元格上添加注释从excel文件创建html输出时，库容易受到XSS的攻击。这个问题的根本原因是在HTML编写器中，用户评论作为链接的一部分连接在一起，并以HTML的形式返回。

CVSS 7.1 · High EPSS 1.32% · P69
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I. Basic Information for CVE-2020-7776

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
PHPOffice PhpSpreadsheet 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHPOffice PhpSpreadsheet是一款用于读取和写入电子表格文件的PHP库。 phpoffice/phpspreadsheet 0.0.0版本存在安全漏洞，该漏洞源于从0.0.0影响包phpoffice phpspreadsheet。当通过在任何单元格上添加注释从excel文件创建html输出时，库容易受到XSS的攻击。这个问题的根本原因是在HTML编写器中，用户评论作为链接的一部分连接在一起，并以HTML的形式返回。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- phpoffice/phpspreadsheet 0.0.0 ~ unspecified -

II. Public POCs for CVE-2020-7776

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III. Intelligence Information for CVE-2020-7776

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Patches & Fixes for CVE-2020-7776 (1)

Vendor Advisories for CVE-2020-7776 (1)

Other References for CVE-2020-7776 (1)

Same Patch Batch · n/a · 2020-12-09 · 27 CVEs total

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Showing top 20 of 27 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a

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