CVE-2021-47749

MEDIUM 5.5

YouPHPTube <= 7.8 - Directory Traversal

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

YouPHPTube <= 7.8 contains a local file inclusion vulnerability that allows unauthenticated attackers to access arbitrary files by manipulating the 'lang' parameter in GET requests. Attackers can exploit the path traversal flaw in locale/function.php to include and view PHP files outside the intended directory by using directory traversal sequences.

CWE	CWE-22
Vendor	youphptube
Product	youphptube
Published	Jan 13, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

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-directory-traversal

Credits

Rafael Pedrero