CVE-2021-47749

MEDIUM

YouPHPTube <= 7.8 - Unauthenticated Path Traversal via Lang Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47749. PoCs published by Rafael Pedrero.

AI-analyzed exploit summary The exploit demonstrates a Local File Inclusion (LFI) vulnerability in YouPHPTube <= 7.8 via the 'lang' parameter, allowing unauthenticated path traversal to include arbitrary files. It also includes a reflected XSS proof-of-concept via the 'redirectUri' parameter.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Rafael Pedrero · textwebappsphp
https://www.exploit-db.com/exploits/51101

The exploit demonstrates a Local File Inclusion (LFI) vulnerability in YouPHPTube <= 7.8 via the 'lang' parameter, allowing unauthenticated path traversal to include arbitrary files. It also includes a reflected XSS proof-of-concept via the 'redirectUri' parameter.

Classification
Working Poc 95%
Attack Type
Info Leak | Xss
Complexity
Trivial
Reliability
Reliable
Target: YouPHPTube <= 7.8
No auth needed
Prerequisites: Access to the target web application
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit
https://www.exploit-db.com/exploits/51101

Scores

CVSS v3 5.5
EPSS 0.0163
EPSS Percentile 73.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (2)
youphptube/youphptube < 7.8
YouPHPTube/YouPHPTube < 7.8
Published Jan 13, 2026
Tracked Since Feb 18, 2026