XML external entity injection in Fortinet FortiPortal
Priority LOW 37CWE-611Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00826 57th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | Fortinet FortiPortal | FortiPortal before 6.0.6 | — | No fix listed | CNA |
- Fortinet FortiPortal VendorFortinet Affected FortiPortal before 6.0.6 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortiportal:*:*:*:*:*:*:*:* | 4.0.0 – 4.0.4; 4.1.0 – 4.1.2; 4.2.0 – 4.2.4; 5.0.0 – 5.0.3; 5.1.0 – 5.1.2; 5.2.0 – 5.2.6; 5.3.0 to before 5.3.7; 6.0.0 to before 6.0.6 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:fortiportal:*:*:*:*:*:*:*:* Versions 4.0.0 – 4.0.4; 4.1.0 – 4.1.2; 4.2.0 – 4.2.4; 5.0.0 – 5.0.3; 5.1.0 – 5.1.2; 5.2.0 – 5.2.6; 5.3.0 to before 5.3.7; 6.0.0 to before 6.0.6 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-36172
- 2026-10-03 Alias added: GHSA-769g-xf8v-jx9v
References
More Fortinet Fortiportal vulnerabilities
- TI-2021-12259 Hard-coded credentials in Fortinet FortiPortal CVSS 3.1CRITICAL 9.8
- TI-2021-12260 Use after free in Fortinet FortiManager CVSS 3.1CRITICAL 9.8
- TI-2024-14445 Authorization bypass in Fortinet FortiPortal CVSS 3.1MEDIUM 4.3
- TI-2017-05005 Improper input validation in Fortinet FortiPortal CVSS 3.0CRITICAL 9.8
- TI-2024-17109 Missing authentication in Fortinet FortiManager CVSS 3.1CRITICAL 9.8
- TI-2017-05000 Incorrect permission assignment in Fortinet FortiPortal CVSS 3.0CRITICAL 9.1
Sources
- CVE-2021-36172 · CVE Program
- CVE-2021-36172 · NVD
- FIRST EPSS
- GHSA-769g-xf8v-jx9v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences