CVE-2021-27520 is a reflected cross-site scripting (XSS) vulnerability in FUDForum version 3.1.0, allowing remote attackers to inject malicious JavaScript code through the "author" parameter in index.php. This medium-severity vulnerability has a CVSS score of 6.1, indicating that it can be exploited over the network with low attack complexity, requiring user interaction to achieve partial confidentiality and integrity impacts. While there is no evidence of active exploitation in the wild (KEV and Hot List are inactive), public exploit code is available via ExploitDB and Nuclei templates. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.1.0CPE matchmatch criteria | cpe:2.3:a:fudforum:fudforum:3.1.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.