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Vulnerability details

CVE-2026-94267

Advanced Custom Fields: ExtendedAdvanced Custom Fields: Extended PRO

Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End Post Update Action

CVSS 3.1
9.0Critical

Official description

The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.8, Advanced Custom Fields: Extended PRO WordPress plugin before 0.9.2.8 does not perform any capability check when updating a post through one of its front-end form actions, allowing unauthenticated visitors to overwrite arbitrary posts, including the ones in which the site stores its own field definitions, which in turn leads to arbitrary code execution on the server. Exploitation requires the site to publish a form whose post-update action maps both its target and its content to visitor-submitted values.

CVSS scores

ScoreVersionSourceVector
9.0Critical 3.1 CISA ADP / Vulnrichment (CISA-ADP) CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
— Advanced Custom Fields: Extended v < 0.9.2.8 CVEProject cvelistV5 (CNA)
— Advanced Custom Fields: Extended PRO v < 0.9.2.8 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-10-23
Last updated
2026-10-23
State
Published
Assigner (CNA)
WPScan
Kolun priority
32 · Low

Exploit prediction (EPSS)

0.39%
Probability of exploitation in 30 days
33.8%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-94
    Improper Control of Generation of Code ('Code Injection')