CVE-2021-43081
mediumpriority · track · 24EPSS 0.009 · 59 %ileEUUSEPSS · scored 2026-10-26
An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS version 7.0.3 and below, 6.4.8 and below, 6.2.10 and below, 6.0.14 to 6.0.0. and in FortiProxy version 7.0.1 and below, 2.0.7 to 2.0.0 web filter override form may allow an unauthenticated attacker to perform an XSS attack via crafted HTTP GET requests.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
- Fortinet Fortinet FortiProxy≤ FortiOS version 7.0.3 and below, 6.4.8 and below, 6.2.10 and below, 6.0.14 to 6.0.0. FortiProxy version 7.0.1 and below, 2.0.7 to 2.0.0.enisa_euvdEU
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2021-43081/cnnvd
- https://fortiguard.com/psirt/FG-IR-21-230cnnvd
- https://vigilance.fr/vulnerability/FortiOS-Cross-Site-Scripting-via-Web-Filter-Block-Override-Form-38208cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2022050317cnnvd
- https://www.fortinet.com/products/secure-web-gateway/fortiproxyPatchcnnvd
- https://fortiguard.com/psirt/FG-IR-21-230enisa_euvd
- https://fortiguard.com/psirt/FG-IR-21-230Vendor Advisorynvd
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