CVE-2026-87901

EUVD-2026-109101
Improper sanitization in the registration module allows reflected Cross-Site Scripting.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
hackeroneCNA
8.3 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
phpbbphpbb
3.3.0 ≤
𝑥
≤ 3.3.18
CNA
Common Weakness Enumeration
References
https://www.phpbb.com/community/viewtopic.php?t=2675305