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Critical 9.0Published Oct 23, 2026

CVE-2026-94267Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End Post Update Action

Updated under an hour ago ()

Does this affect you?

It affects Unknown Advanced Custom Fields: Extended and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.39%, higher than 33% of scored CVEs.

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
9.0 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE)
CWE-94
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
0.39% (percentile 33)
Assigned by
WPScan
NVD analysis
Deferred
Record last updated
Oct 23, 2026
First seen by InfoSec Signals
Oct 23, 2026

Affected products

Affected products
Unknown Advanced Custom Fields: Extended
unknown:advanced_custom_fields_extended (from the name)
before 0.9.2.8
CNA record
Unknown Advanced Custom Fields: Extended PRO
unknown:advanced_custom_fields_extended_pro (from the name)
before 0.9.2.8
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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