MEDIUMCVSS 5.3

CVE-2021-21706

CVE-2021-21706 updated by NVD

Modified: 2026-09-20
Sources: nvd

Summary

In PHP versions 7.3.x below 7.3.31, 7.4.x below 7.4.24 and 8.0.x below 8.0.11, in Microsoft Windows environment, ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file, thus potentially causing files to be created or overwritten, subject to OS permissions.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
PHP	php	[object Object], [object Object], [object Object]	—

References

https://nvd.nist.gov/vuln/detail/CVE-2021-21706

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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