CVE-2021-27520 EXPLOIT
6.1
MEDIUM · CVSS 3.1 · EPSS 6.4% (pctl 93)
Patch early
A public exploit exists.
Description
A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.
Scoring
| CVSS | 6.1 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| EPSS | 6.4% — more likely to be exploited than 93% of all CVEs |
| Weakness | CWE-79 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-03-19 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| fudforum | fudforum |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | FUDForum 3.1.0 - 'author' Reflected XSS | 2021-06-03 |
References
→ the Explorer · watch your stack · NVD