CVE-2020-7776
unknown
CVSS v3
—
CVSS v4 NEW
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VIR risk
—
Description
Cross-site scripting in phpoffice/phpspreadsheet
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | phpoffice/phpspreadsheet | <1.16.0 | 1.16.0 |
| Packagist | phpoffice/phpexcel | <=1.8.2 | |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-7776
- https://github.com/PHPOffice/PhpSpreadsheet/pull/1719
- https://github.com/PHPOffice/PhpSpreadsheet/commit/0ed5b800be2136bcb8fa9c1bdf59abc957a98845
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpoffice/phpspreadsheet/CVE-2020-7776.yaml
- https://github.com/PHPOffice/PhpSpreadsheet/blob/master/src/PhpSpreadsheet/Writer/Html.php%23L1792
- https://snyk.io/vuln/SNYK-PHP-PHPOFFICEPHPSPREADSHEET-1048856
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.