Improper authentication in Advanced Custom Fields: Extended
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.7 does not verify that the requester is authorized to edit the targeted user account in the update-user action of its front-end Forms module; it only checks a capability when the submitted role is administrator or super_admin. On a site that exposes a publicly reachable front-end form whose user-update action targets an existing administrator (a fixed target, or one mapped to a visitor-submitted field) and maps the password to a visitor-submitted field, an unauthenticated visitor can overwrite that administrator's password and take over the account. The default target is the submitting user, so exploitation depends on the form being configured to target another account.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Advanced Custom Fields: Extended | before 0.9.2.7 | 0.9.2.7 | Patch available | CNA |
- Advanced Custom Fields: Extended VendorUnknown Affected before 0.9.2.7 Fixed in 0.9.2.7 Patch available CNA
Remediation
- Fix · CNA Advanced Custom Fields: Extended (Unknown) Fixed in 0.9.2.7
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Advanced Custom Fields: Extended 0.9.2.7
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-55522 Improper privilege management in Advanced Custom Fields: ExtendedPriority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12526
- 2026-10-03 Alias added: GHSA-qq65-x2qx-772f
References
Sources
- CVE-2026-12526 · CVE Program
- CVE-2026-12526 · NVD
- FIRST EPSS
- GHSA-qq65-x2qx-772f · GitHub Advisory Database · CC BY 4.0
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