CVE-2021-27520

6.1 mediumEPSS 6.4%

Medium (6.1) in fudforum fudforum. EPSS 6.4% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.

Severity

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 6.4% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-03-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19