high7.1
CVE-2020-7776
Cross-site scripting in phpoffice/phpspreadsheet
Impact
This affects the package phpoffice/phpspreadsheet. 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | phpoffice/phpspreadsheet | < 1.16.0 | 1.16.0 |
| composer | phpoffice/phpexcel | <= 1.8.2 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Phpoffice | Phpspreadsheet | before 1.16.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/PHPOffice/PhpSpreadsheet/blob/master/src/PhpSpreadsheet/Writer/Html.php%23L1792
- https://github.com/PHPOffice/PhpSpreadsheet/commit/0ed5b800be2136bcb8fa9c1bdf59abc957a98845
- https://snyk.io/vuln/SNYK-PHP-PHPOFFICEPHPSPREADSHEET-1048856
- https://github.com/advisories/GHSA-4mqv-gcr3-pff9
- https://nvd.nist.gov/vuln/detail/CVE-2020-7776
- https://github.com/PHPOffice/PhpSpreadsheet/pull/1719
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpoffice/phpspreadsheet/CVE-2020-7776.yaml