5.3

CVE-2026-4812: wordpress advanced-custom-fields Missing Authorization

CVSS: 5.3v3.1MediumDeferred
Published 15-04-2026Last modified 15-04-2026
Open JSON

Vulnerability summary

CVE-2026-4812 is a medium (CVSS 5.3) Missing Authorization vulnerability in wordpress advanced-custom-fields. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 58.1% of scored vulnerabilities. Fixed in 6.7.1.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.86%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-04-2026
    PublishedVulnerability first disclosed.
  2. 15-04-2026
    Last modifiedVulnerability information updated.

Description

The Advanced Custom Fields (ACF) plugin for WordPress is vulnerable to Missing Authorization to Arbitrary Post/Page Disclosure in versions up to and including 6.7.0. This is due to AJAX field query endpoints accepting user-supplied filter parameters that override field-configured restrictions without proper authorization checks. This makes it possible for unauthenticated attackers with access to a frontend ACF form to enumerate and disclose information about draft/private posts, restricted post types, and other data that should be restricted by field configuration.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

-0.05 pp

From 0.91% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.86%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wordpress1 product
  • advanced-custom-fields≤ 6.7.0 (fixed in 6.7.1)
Wpengine1 product

2 vendors · 2 products

References

18 links
Show all 18 references