CVE-2021-47750

MEDIUM 6.1

YouPHPTube <= 7.8 - Cross-Site Scripting

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

YouPHPTube <= 7.8 contains a cross-site scripting vulnerability that allows attackers to inject malicious scripts through the redirectUri parameter in the signup page. Attackers can craft special signup URLs with embedded script tags to execute arbitrary JavaScript in victims' browsers when they access the signup page.

CWE	CWE-79
Vendor	youphptube
Product	youphptube
Published	Jan 13, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

YouPHPTube / YouPHPTube

0 ≤ 7.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/51101 web.archive.org: https://web.archive.org/web/20170506141644/https://www.youphptube.com/ vulncheck.com: https://www.vulncheck.com/advisories/youphptube-cross-site-scripting

Credits

Rafael Pedrero