CVE-2026-66666

MEDIUM CVSS 4.0: 6.9 EPSS 0.29%
Updated Oct 07, 2026
Automattic
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions 6.6 — 7.1.2
Type CWE-201
Vendor Automattic
Public PoC No

Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress allows Retrieve Embedded Sensitive Data. This issue affects WordPress: from 7.1 through 7.1.2, from 7.0 through 7.0.6, from 6.9 through 6.9.9, from 6.8 through 6.8.10, from 6.7 through 6.7.9, and from 6.6 through 6.6.9.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
7.1 <= 7.1.2
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
7.0 <= 7.0.6
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
6.9 <= 6.9.9
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
6.8 <= 6.8.10
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
6.7 <= 6.7.9
Automattic Wordpress
cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
6.6 <= 6.6.9