---
id: CVE-2021-25878
title: >-
  AVideo/YouPHPTube 10.0 and prior is affected by multiple reflected Cross
  Script Scripting vulnerabilities via the videoName parameter which allows a
  remote attacker to steal administrators' session cookies or perform actions as
  an admini…
summary: >-
  AVideo/YouPHPTube 10.0 and prior is affected by multiple reflected Cross
  Script Scripting vulnerabilities via the videoName parameter which allows a
  remote attacker to steal administrators' session cookies or perform actions as
  an admini…
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-2021-25878'
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: 0.00862
epssPercentile: 0.56764
ingestedAt: '2026-07-06T17:03:23.608Z'
---

## Overview

AVideo/YouPHPTube 10.0 and prior is affected by multiple reflected Cross Script Scripting vulnerabilities via the videoName parameter which allows a remote attacker to steal administrators' session cookies or perform actions as an administrator.

## Affected

- `youphptube <= 10.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.