CVE-2026-6831

Advanced Contact form 7 DB <= 2.1.1 - Missing Authorization to Authenticated (Contributor+) Information Disclosure via 'acf7db' Shortcode

2026-09-22 17:36
Quốc Huy (jtwings)

Strategic Overview

Status
Patched in 2.1.2
Affected Plugin
Advanced Contact form 7 DB
Affected Version
<= 2.1.1
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-6831
View all Advanced Contact form 7 DB vulnerabilities

At a glance

CVE-2026-6831 is a medium-severity Missing Authorization vulnerability in the Advanced Contact form 7 DB WordPress plugin, affecting versions <= 2.1.1. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 2.1.2; sites on affected versions should update now. Disclosed September 2026, reported by Quốc Huy (jtwings).

Vulnerability Overview

The Advanced Contact form 7 DB plugin for WordPress is vulnerable to missing authorization in all versions up to, and including, 2.0.9. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with Contributor-level access and above, to read all Contact Form 7 submission data via the 'acf7db' shortcode.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

Advanced Contact form 7 DB <= 2.1.1 carries this weakness at acf7db, and reaching it takes an account at Contributor level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Advanced Contact form 7 DB the fix is 2.1.2: builds <= 2.1.1 are affected, anything from 2.1.2 onward is not.

Remediation

Update to version 2.1.2, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Advanced Contact form 7 DB 2.1.2 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-6831https://www.wordfence.com/threat-intel/vulnerabilities/id/b3c5fe0b-8a22-4df2-9adf-b6a7fe1a8a8chttps://nvd.nist.gov/vuln/detail/CVE-2026-6831

Related records

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