CVE-2021-47749

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://web.archive.org/web/20170506141644/https://www.youphptube.com/	Not Applicable
https://www.exploit-db.com/exploits/51101	Exploit Third Party Advisory VDB Entry
https://www.vulncheck.com/advisories/youphptube-directory-traversal	Third Party Advisory
https://www.exploit-db.com/exploits/51101	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:youphptube:youphptube:*:*:*:*:*:*:*:*

History

26 Jan 2026, 16:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~6.2~~	v2 : unknown v3 : 5.5

22 Jan 2026, 20:22

Type	Values Removed	Values Added
References	~~() https://web.archive.org/web/20170506141644/https://www.youphptube.com/ -~~	() https://web.archive.org/web/20170506141644/https://www.youphptube.com/ - Not Applicable
References	~~() https://www.exploit-db.com/exploits/51101 -~~	() https://www.exploit-db.com/exploits/51101 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.vulncheck.com/advisories/youphptube-directory-traversal -~~	() https://www.vulncheck.com/advisories/youphptube-directory-traversal - Third Party Advisory
First Time		Youphptube Youphptube youphptube
CPE		cpe:2.3:a:youphptube:youphptube::::::::

14 Jan 2026, 20:15

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/51101 -~~	() https://www.exploit-db.com/exploits/51101 -

13 Jan 2026, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-13 23:15

Updated : 2026-01-26 16:15

NVD link : CVE-2021-47749

Mitre link : CVE-2021-47749

CVE.ORG link : CVE-2021-47749

JSON object : View

Products Affected

youphptube

youphptube

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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