XSS in Fortinet Fortiweb
CVE-2021-22122
An improper neutralization of input during web page generation in FortiWeb GUI interface 6.3.0 through 6.3.7 and version before 6.2.4 may allow an unauthenticated, remote attacker to perform a reflected cross site scripting attack (XSS) by injecting malicious payload in different vulnerable API end-points.
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: 0.105 (95.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.105 · newest: 0.105 · change: 0.000
Affected products
- Fortinet Fortiweb — versions FortiWeb 6.3.0 through 6.3.7 and version before 6.2.4
- Fortinet Fortiweb
Weakness classification (CWE)
Public proof-of-concept exploits
References
- fortiguard.com/advisory/FG-IR-20-122 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22122?
- CVE-2021-22122 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-02-08.
- How severe is CVE-2021-22122?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-22122 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.