useru1k/php-8.1.0-dev-exploit

PoC

Exploit for the PHP 8.1.0-dev backdoor vulnerability (CVE-2021-21707)

view exploit source poc_in_githubauthor useru1kpublished 2025-09-08catalog poc_in_github

exploited CVEs (1)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2021-21707US	medium5.3	25.3% (98th)	Exploit	2021-11-29
In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If…

scry

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