XSS in Fudforum
CVE-2021-27520
A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.064 (93.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.064 · newest: 0.064 · change: 0.000
Affected products
- Fudforum — versions 3.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/fudforum/FUDforum/issues/2 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27520?
- CVE-2021-27520 is a medium-severity vulnerability in Fudforum, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-19.
- How severe is CVE-2021-27520?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-27520 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.