---
id: CVE-2026-100877
title: >-
  A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project up
  to 5dadec098bfbbf3300d60c3494db3fb95b66e7be
summary: >-
  A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project up
  to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected by this vulnerability is
  an unknown functionality of the file registrationform.php. Executing a
  manipulati…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-79
  - CWE-94
vendor: mathurvishal
product: CloudClassroom-PHP-Project
affected:
  - CloudClassroom-PHP-Project 5dadec098bfbbf3300d60c3494db3fb95b66e7be
published: '2026-09-27'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T15:16:04.793'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100877'
references:
  - url: >-
      https://github.com/rmsbpro/Advisory/blob/main/registrationform-stored-xss.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-100877'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/915444'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410807'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410807/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-28T13:51:10.091973Z'
ingestedAt: '2026-09-27T20:58:01.544Z'
epss: 0.00263
epssPercentile: 0.18087
---

## Overview

A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected by this vulnerability is an unknown functionality of the file registrationform.php. Executing a manipulation of the argument FName/LName/Addrs can lead to cross site scripting. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

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