---
id: CVE-2025-63842
title: >-
  A Cross-Site Scripting (XSS) vulnerability in the web backend for the Repetico
  app 1.9.7.31 for Android allows a remote authenticated user to execute
  arbitrary JavaScript code in the app's context via crafted input in the
  multiple-choice…
summary: >-
  A Cross-Site Scripting (XSS) vulnerability in the web backend for the Repetico
  app 1.9.7.31 for Android allows a remote authenticated user to execute
  arbitrary JavaScript code in the app's context via crafted input in the
  multiple-choice…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: Repetico
product: web backend
affected:
  - web_backend <= 2026-06-30
published: '2026-09-14'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:00:03.713'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-63842'
references:
  - url: 'https://github.com/ciernyvlk/CVE/blob/main/CVE-2025-63842.md'
    label: cve@mitre.org
  - url: 'https://github.com/ciernyvlk/CVE/blob/main/CVE-2025-63842.md'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0023
epssPercentile: 0.12319
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T15:50:13.464916Z'
ingestedAt: '2026-09-14T15:23:07.467Z'
---

## Overview

A Cross-Site Scripting (XSS) vulnerability in the web backend for the Repetico app 1.9.7.31 for Android allows a remote authenticated user to execute arbitrary JavaScript code in the app's context via crafted input in the multiple-choice question text field.

## Remediation

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