High severity7.2NVD Advisory· Published May 21, 2021· Updated Jun 17, 2026

CVE-2021-27811

Description

A code injection vulnerability has been discovered in the Upgrade function of QibosoftX1 v1.0. An attacker is able execute arbitrary PHP code via exploitation of client_upgrade_edition.php and Upgrade.php.

Affected products

QibosoftX1/QibosoftX1description
Qibosoft/qibosoftllm-fuzzy
Range: = 1.0

Patches

Vulnerability mechanics

References

github.com/whiskey-jj/w2s2x2222.github.io/issues/2nvdExploitIssue TrackingThird Party Advisory
www.cnvd.org.cn/flaw/show/2297879nvdThird Party Advisory

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cvss	0.468
epss	0.001
exploit	0.000
kev	0.000
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ransomware	0.000