wpengine Advanced Custom Fields Plugin up to 6.8.1 on WordPress Form Submission post_title authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in wpengine Advanced Custom Fields Plugin up to 6.8.1 on WordPress and classified as critical. Affected is an unknown function of the component Form Submission Handler. The manipulation of the argument post_title results in authorization. This vulnerability is identified as CVE-2026-8382. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in wpengine Advanced Custom Fields Plugin up to 6.8.1 on WordPress. It has been classified as critical. Affected is an unknown code of the component Form Submission Handler. The manipulation of the argument post_title with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by Sarawut Poolkhet. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-8382 since 05/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/31/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-33483). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (Wordfence): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/12/2026 CVE reserved
05/31/2026 +19 days Advisory disclosed
05/31/2026 +0 days VulDB entry created
05/31/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Sarawut Poolkhet
Status: Not defined

CVE: CVE-2026-8382 (🔒)
GCVE (CVE): GCVE-0-2026-8382
GCVE (VulDB): GCVE-100-367476
EUVD: 🔒

Entryinfo

Created: 05/31/2026 06:05
Updated: 05/31/2026 07:32
Changes: 05/31/2026 06:05 (65), 05/31/2026 07:32 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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