mathurvishal CloudClassroom-PHP-Project registrationform.php cross site scripting (CVE-2026-100877) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-100877

mathurvishal CloudClassroom-PHP-Project registrationform.php cross site scripting

Answer in brief

CVE-2026-100877 records a Medium severity (CVSS 5.3) vulnerability in mathurvishal CloudClassroom-PHP-Project registrationform.php cross site scripting. The current sources do not mark it as known exploited. The current feed maps mathurvishal/CloudClassroom-PHP-Project (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 27, 2026Updated Sep 27, 2026Source checked Sep 27, 2026First seen by HOL Sep 27, 2026Material review Sep 27, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps mathurvishal/CloudClassroom-PHP-Project (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
mathurvishal/CloudClassroom-PHP-Projectgeneric	5dadec098bfbbf3300d60c3494db3fb95b66e7be	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for mathurvishal/CloudClassroom-PHP-Project.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 27, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.