WORDFENCE-28747e2e-9012-470c-a891-0fe97fd1ddbaWordfence

Vulnerability Summary

WordPress Core is vulnerable to an authorization bypass via the XML-RPC _insert_post() handler in various versions up to, and including, 7.1 due to internal-only builtin post types such as customize_changeset being writable through the generic post API, bypassing the customizer's per-setting capability enforcement (notably edit_css/unfiltered_css). A user who can create changesets but lacks edit_css can write changeset values including Additional CSS.

Severity Level

MEDIUM(5.5)

Published Date

Sep 17, 2026

Last Modified

Sep 17, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-862: Missing Authorization ↗

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVSS v3.1 Base Metrics — Score 5.5 (MEDIUM)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

ConfidentialityLow

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

WordPress * - 6.6.7
WordPress 6.7 - 6.7.7
WordPress 6.8 - 6.8.8
WordPress 6.9 - 6.9.7
WordPress 7.0 - 7.0.4
WordPress 7.1 - 7.1

Patched Versions

WordPress 1

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