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Vulnerability record · CVE-2021-47749 · published 13 January 2026

CVE-2021-47749: Youphptube path traversal vulnerability

YYouphptube · Youphptube

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.

8.7 CVSS 4.0 High EPSS 1.9% · top 21.7% CWE-22 · Path traversal
8.7CVSS 4.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://web.archive.org/web/20170506141644/https://www.youphptube.com/ Not Applicable
https://www.exploit-db.com/exploits/51101 ExploitThird Party AdvisoryVDB Entry
https://www.vulncheck.com/advisories/youphptube-directory-traversal Third Party Advisory
https://www.exploit-db.com/exploits/51101 ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2019-5114Youphptube sql injection vulnerabilityAn exploitable SQL injection vulnerability exists in the authenticated portion of YouPHPTube 7.6. Specially crafted web requests can cause SQL inject…EPSS 1.4%9.8CVE-2019-18662Youphptube sql injection vulnerabilityAn issue was discovered in YouPHPTube through 7.7. User input passed through the live_stream_code POST parameter to /plugin/LiveChat/getChat.json.php…EPSS 2.3%9.8CVE-2019-5151Youphptube sql injection vulnerabilityAn exploitable SQL injection vulnerability exist in YouPHPTube 7.7. A specially crafted unauthenticated HTTP request can cause a SQL injection, possi…EPSS 2.3%9.8CVE-2019-16124Youphptube missing authorization vulnerabilityIn YouPHPTube 7.4, the file install/checkConfiguration.php has no access control, which leads to everyone being able to edit the configuration file, …EPSS 28%8.8CVE-2019-5116Youphptube sql injection vulnerabilityAn exploitable SQL injection vulnerability exists in the authenticated part of YouPHPTube 7.6. Specially crafted web requests can cause a SQL injecti…EPSS 1.1%8.8CVE-2019-5117Youphptube sql injection vulnerabilityExploitable SQL injection vulnerabilities exists in the authenticated portion of YouPHPTube 7.6. Specially crafted web requests can cause SQL injecti…EPSS 1.1%8.8CVE-2019-5119Youphptube sql injection vulnerabilityAn exploitable SQL injection vulnerability exist in the authenticated part of YouPHPTube 7.6. Specially crafted web requests can cause SQL injections…EPSS 0.97%8.8CVE-2019-5120Youphptube sql injection vulnerabilityAn exploitable SQL injection vulnerability exists in the authenticated part of YouPHPTube 7.6. Specially crafted web requests can cause SQL injection…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2021-47749), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.