CVE-2026-94267: critical vulnerability in Advanced Custom Fields: Extended
Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End Post Update Action
Published
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48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9epss 0.4%
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:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Unknown · Advanced Custom Fields: ExtendedUnknown · Advanced Custom Fields: Extended PROpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/9c8f45c1-cd85-4a9c-be77-88801d8143ce/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Advanced Custom Fields: Extended
In the same product, most dangerous first.
CVE-2021-24865—Advanced Custom Fields: Extended < 0.8.8.7 - Admin+ SQL InjectionEPSS 1.5%CVE-2026-80467HIGHAdvanced Custom Fields: Extended 0.9.2.2 - 0.9.2.6 - Unauthenticated Privilege Escalation via Front-End User Insert ActionEPSS 0.4%CVE-2026-12526HIGHAdvanced Custom Fields: Extended < 0.9.2.7 - Unauthenticated Administrator Account Takeover via Front-End User Update ActionEPSS 0.4%CVE-2026-94268HIGHAdvanced Custom Fields: Extended 0.9.2.7 - Unauthenticated Administrator Account Takeover via Front-End User Update ActionEPSS 0.3%CVE-2026-94264MEDIUMAdvanced Custom Fields: Extended 0.8.9.4 - 0.9.2.7 - Contributor+ XSS via Form Shortcode AttributesEPSS 0.3%CVE-2026-94262HIGHAdvanced Custom Fields: Extended 0.9.2.7 - Unauthenticated Non-Administrator Account Takeover via Front-End User Update ActionEPSS 0.3%