Overview
- Description
- PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions `\PhpOffice\PhpSpreadsheet\Writer\Html` doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker may used a crafted spreadsheet to fully takeover a session of a user viewing spreadsheet files as HTML. This issue has been addressed in release version 2.1.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.4
- Impact score
- 2.7
- Exploitability score
- 2.3
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "520A70B7-2C60-4064-B452-538ED7A8D30E",
"versionEndExcluding": "1.29.1"
},
{
"criteria": "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "373AEDCC-F178-41C9-8756-573EB2FCF247",
"versionEndExcluding": "2.1.0",
"versionStartIncluding": "2.0.0"
}
],
"operator": "OR"
}
]
}
]