CVE-2026-87901

phpBB Registration Module XSS Vulnerability

Published Oct 23, 2026 CVSS 3.0 · 8.3 High EPSS < 1% KEV · Not listed
Description
Improper sanitization in the registration module allows reflected Cross-Site Scripting.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Phpbb
Phpbb phpbb
Vendors & Products Phpbb
Phpbb phpbb
Type Values Removed Values Added
Title phpBB Registration Module XSS Vulnerability
Type Values Removed Values Added
Description Improper sanitization in the registration module allows reflected Cross-Site Scripting.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 8.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Nov 2, 2026, 3:38 PM
Reserved
Sep 9, 2026, 3:00 PM
Status
Deferred
Published
Oct 23, 2026, 5:17 PM
Modified
Nov 2, 2026, 4:17 PM