Is this vulnerability remotely exploitable?

Yes. If the `/api/vanna/v2/` endpoint is network-accessible (for example, exposed on the internet or reachable from untrusted networks), an attacker can exploit the missing authentication remotely by sending crafted HTTP requests.

What level of access does an attacker need to exploit this?

The attacker only needs network access to the API endpoint. No prior credentials or valid session are required if the endpoint is reachable and unprotected.

What is the safest general fix pattern?

Enforce mandatory authentication on the Chat API endpoint using a centralized mechanism (such as middleware or an API gateway) so that

Severity:

HIGH RISK

(7.3)

Missing Authentication (CWE-287) in Vanna Chat API Endpoint /api/vanna/v2/

CVE-2026-5320

Published:

Apr 1, 2026

Status:

Deferred

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-287;CWE-306

Impact:

Unauthorized Access to Chat API Functionality

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-287;CWE-306

Impact:

Unauthorized Access to Chat API Functionality

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

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Missing Authentication (CWE-287) in Vanna Chat API Endpoint /api/vanna/v2/

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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