Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End Post Update Action
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Fix
- Fixed in 0.9.2.8
- Public exploit
- None on Exploit-DB
Summary
Advanced Custom Fields: Extended and its PRO version, both WordPress plugins, are affected. An unauthenticated visitor could overwrite arbitrary website posts, including the site's own field definitions, potentially leading to full remote code execution on the server.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Affected versions
- Unknown Advanced Custom Fields: Extended
fixed in 0.9.2.8
- Unknown Advanced Custom Fields: Extended PRO
fixed in 0.9.2.8