Path Traversal in Youphptube
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.019 (78.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.001
Affected products
- Youphptube — versions 0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/51101 (Exploit, VDB Entry, Third Party Advisory, exploit)
- web.archive.org/web/20170506141644/https://www.youphptube.com/ (product, Not Applicable)
- www.vulncheck.com/advisories/youphptube-directory-traversal (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47749?
- CVE-2021-47749 is a medium-severity vulnerability in Youphptube, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-01-13.
- How severe is CVE-2021-47749?
- Medium severity. CVSS v3 base score is 5.5 out of 10.