5.3

CVE-2026-8382: wordpress advanced-custom-fields Missing Authorization

CVSS: 5.3v3.1MediumDeferred
Published 31-05-2026Last modified 01-06-2026
Open JSON

Vulnerability summary

CVE-2026-8382 is a medium (CVSS 5.3) Missing Authorization vulnerability in wordpress advanced-custom-fields. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.4% of scored vulnerabilities. Fixed in 6.8.2.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.52%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 31-05-2026
    PublishedVulnerability first disclosed.
  2. 01-06-2026
    Last modifiedVulnerability information updated.

Description

The Advanced Custom Fields (ACF®) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.8.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the post_title and post_content of any post bound to a publicly accessible acf_form() instance by injecting values into the _post_title and _post_content parameters of a form submission request.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

+0.06 pp

From 0.46% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.52%

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≤ 6.8.1 (fixed in 6.8.2)
Wpengine1 product

2 vendors · 2 products

References

4 links