{"id":"CVE-2021-25876","title":"AVideo/YouPHPTube 10.0 and prior has multiple reflected Cross Script Scripting vulnerabilities via the u parameter which allows a remote attacker to steal administrators' session cookies or perform actions as an administrator.","summary":"AVideo/YouPHPTube 10.0 and prior has multiple reflected Cross Script Scripting vulnerabilities via the u parameter which allows a remote attacker to steal administrators' session cookies or perform actions as an administrator.","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"youphptube","product":"youphptube","affected":["youphptube <= 10.0"],"published":"2021-11-01","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-25876","references":[{"url":"https://synacktiv.com","label":"cve@mitre.org"},{"url":"https://www.synacktiv.com/sites/default/files/2021-01/YouPHPTube_Multiple_Vulnerabilities.pdf","label":"cve@mitre.org"},{"url":"http://avideoyouphptube.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://synacktiv.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.synacktiv.com/sites/default/files/2021-01/YouPHPTube_Multiple_Vulnerabilities.pdf","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00869,"epssPercentile":0.56752,"ingestedAt":"2026-07-06T17:03:23.605Z","slug":"CVE-2021-25876","body":"## Overview\n\nAVideo/YouPHPTube 10.0 and prior has multiple reflected Cross Script Scripting vulnerabilities via the u parameter which allows a remote attacker to steal administrators' session cookies or perform actions as an administrator.\n\n## Affected\n\n- `youphptube <= 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}