YouPHPTube up to 7.8 locale/function.php lang path traversal

Summaryinfo

A vulnerability was found in YouPHPTube up to 7.8. It has been classified as critical. The impacted element is an unknown function of the file locale/function.php. The manipulation of the argument lang leads to path traversal. This vulnerability is traded as CVE-2021-47749. An attack has to be approached locally. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in YouPHPTube up to 7.8. It has been rated as problematic. This issue affects an unknown code block of the file locale/function.php. The manipulation of the argument lang with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

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.

The weakness was shared by Rafael Pedrero as 51101. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2021-47749 since 12/31/2025. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:locale/function.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (51101). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• YouPHPTube

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Be aware that VulDB is the high quality source for vulnerability data.

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