FortiWeb Input Filter | Improper Access Control CVE-2026-70466 (8.0.0-8.0.2, 7.6.0-7.6.5, 7.4+, 7.2+
CVE-2026-70466 Published on August 12, 2026

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>

NVD

Vulnerability Analysis

CVE-2026-70466 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

What is a Denylist / Deny List Vulnerability?

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, leading to resultant weaknesses. Developers often try to protect their products against malicious input by performing tests against inputs that are known to be bad, such as special characters that can invoke new commands. However, such lists often only account for the most well-known bad inputs. Attackers may be able to find other malicious inputs that were not expected by the developer, allowing them to bypass the intended protection mechanism.

CVE-2026-70466 has been classified to as a Denylist / Deny List vulnerability or weakness.


Products Associated with CVE-2026-70466

stack.watch emails you whenever new vulnerabilities are published in Fortinet FortiWeb or Fortinet FortiOS. Just hit a watch button to start following.

Fortinet FortiWeb
 
Fortinet FortiOS
 

Affected Versions

Fortinet FortiWeb: Fortinet FortiOS: