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TI-2021-06338 Aliases CVE-2021-24021GHSA-v56v-j2pc-w577

Cross-site scripting in Fortinet FortiAnalyzer

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

An improper neutralization of input vulnerability [CWE-79] in FortiAnalyzer versions 6.4.3 and below, 6.2.7 and below and 6.0.10 and below may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS) via the column settings of Logview in FortiAnalyzer, should the attacker be able to obtain that POST request, via other, hypothetical attacks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00662 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortinet FortiAnalyzerFortiAnalyzer 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0—No fix listedCNA
  • Fortinet FortiAnalyzer VendorFortinet Affected FortiAnalyzer 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*6.0.0 to before 6.2.8; 6.4.0 to before 6.4.4VulnerableFortinet
  • cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.2.8; 6.4.0 to before 6.4.4 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24021
  2. 2026-10-03 Alias added: GHSA-v56v-j2pc-w577
  3. 2026-10-06 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2023-10911 A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of… CVSS 3.1CRITICAL 9.3
  • TI-2023-23782 Path traversal in Fortinet FortiAnalyzer CVSS 3.1MEDIUM 6.5
  • TI-2021-12260 Use after free in Fortinet FortiManager CVSS 3.1CRITICAL 9.8
  • TI-2024-33992 Weak authentication in Fortinet FortiAnalyzer CVSS 3.1CRITICAL 9.8
  • TI-2024-15684 A client-side enforcement of server-side security in Fortinet FortiAnalyzer-BigData at… CVSS 3.1HIGH 8.8
See all 91 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences