CVE-2026-70466

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Improper Access Control in Fortinet FortiWeb

Publication date: 2026-08-12

Last updated on: 2026-08-26

Assigner: Fortinet, Inc.

Description

A incomplete list of disallowed inputs vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to improper access control via <insert attack vector here>

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-12

Last Modified

2026-08-26

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-31

NVD

CVE-2026-70466

EUVD

EUVD-2026-57192

Affected Vendors & Products

Vendor	Product	Version / Range
fortinet	fortiweb	From 8.0.0 (inc) to 8.0.2 (inc)
fortinet	fortiweb	From 7.6.0 (inc) to 7.6.5 (inc)
fortinet	fortiweb	7.4
fortinet	fortiweb	7.2
fortinet	fortiweb	7.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-184	The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.

Attack-Flow Graph

Executive Summary

This vulnerability is an incomplete list of disallowed inputs issue in Fortinet FortiWeb versions 8.0.0 through 8.0.2, 7.6.0 through 7.6.5, and all versions of 7.4, 7.2, and 7.0. It may allow an attacker to bypass access controls through an unspecified attack vector.

Detection Guidance

This vulnerability involves improper access control due to incomplete disallowed inputs in Fortinet FortiWeb versions 8.0.0 through 8.0.2, 7.6.0 through 7.6.5, and all versions of 7.4, 7.2, and 7.0. Detection requires checking FortiWeb versions and inspecting input validation mechanisms for missing restrictions.

Impact Analysis

The vulnerability could allow unauthorized access to FortiWeb resources, potentially leading to data exposure or manipulation. The impact is rated as medium severity with a CVSS score of 5.3, indicating limited impact on confidentiality, integrity, or availability.

Compliance Impact

The vulnerability allows improper access control, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data) by increasing the risk of data breaches or unauthorized disclosures.

Mitigation Strategies

Update FortiWeb to a patched version if available. If not, restrict network access to the device and monitor for unusual activity. Disable unnecessary services and apply Fortinet's official security advisories.

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