WordPress 6.4.11

WordPress 6.4.11 has 12 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2026; all 12 are fixed as of September 2026. Their average CVSS score is 4.8, and the most serious one scores 8.1 out of 10. Severity breakdown: 0 critical and 2 high. 2026 was the busiest year with 11 disclosures.

The most common weakness is Missing Authorization, behind 3 of the records (25%). Other recurring categories include Cross-Site Scripting, Exposure Of Sensitive Information To An Unauthorized Actor.

Every one of the 12 issues recorded for WordPress 6.4.11 has a vendor fix available, so running the current release closes all known holes.

10 independent researchers contributed these findings, most of them (2) reported by Anthropic.

01234567891020.06.2012Today20.06.20123.7WordPress Core - Informational < 6.8 - Weak Hashing Algorithm CVSS 3.7 · 20.06.201217.09.20264.4WordPress Core <= 7.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Custom Header Image Data CVSS 4.4 · 17.09.20264.3WordPress Core <= 7.1 - Authenticated (Contributor+) Path Traversal via REST Templates Controller CVSS 4.3 · 17.09.20264.3WordPress Core <= 7.1 - Authenticated (Author+) Information Exposure via attachment_submitbox_metadata() CVSS 4.3 · 17.09.20264.3WordPress Core <= 7.1 - Forced Theme Install/Preview and Selector Injection via Theme Installer Route CVSS 4.3 · 17.09.20262.7WordPress Core <= 7.1 - Authenticated (Administrator+) Missing Authorization to Network Plugin Activation (Multisite) CVSS 2.7 · 17.09.20267.2WordPress Core <= 7.1 - Unauthenticated Stored Cross-Site Scripting via wpautop() Blockquote Handling CVSS 7.2 · 17.09.20265.5WordPress Core <= 7.1 - Missing Authorization to customize_changeset Write via XML-RPC (Multisite/Custom Role edit_css Bypass) CVSS 5.5 · 17.09.20264.3WordPress Core <= 7.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Post Overwrite CVSS 4.3 · 17.09.20264.3WordPress Core <= 7.1 - Authenticated (Author+) Missing Authorization to Comment/Note Reparenting via REST API CVSS 4.3 · 17.09.20264.3WordPress Core <= 7.1 - Authenticated (Contributor+) Information Exposure via Sample Permalink AJAX Actions CVSS 4.3 · 17.09.202622.09.20268.1WordPress Core <= 7.1.1 - Unauthenticated Local File Inclusion via locate_template() Path Traversal CVSS 8.1 · 22.09.2026

Strategic Overview

Avg CVSSMedium
4.8/ 10
Patch Coverage100%
Open

0

Fixed

12

Get automatic notifications for all WordPress 6.4.11 vulnerabilities before they are exploited.

Highest severity on recordCVSS 8.1CVE-2026-87902

WordPress Core <= 7.1.1 - Unauthenticated Local File Inclusion via locate_template() Path Traversal

Read the full analysis

Vulnerability Records

12 records
2026-09-22 00:00
WordPress Core <= 7.1.1 - Unauthenticated Local File Inclusion via locate_template() Path Traversal
WordPress 6.4.11
4.7 – 7.1.1 · 25 branches
CVE-2026-87902
8.1
High
Robert ResslYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Custom Header Image Data
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
4.4
Medium
Jeremy FeltYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Contributor+) Path Traversal via REST Templates Controller
WordPress 6.4.11
5.8 – 7.1 · 6 branches
N/A
4.3
Medium
AnthropicYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Author+) Information Exposure via attachment_submitbox_metadata()
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
4.3
Medium
HDWSecYes
2026-09-17 00:00
WordPress Core <= 7.1 - Forced Theme Install/Preview and Selector Injection via Theme Installer Route
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
4.3
Medium
Paulos YibeloYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Administrator+) Missing Authorization to Network Plugin Activation (Multisite)
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
2.7
Low
Jesse McNeilYes
2026-09-17 00:00
WordPress Core <= 7.1 - Unauthenticated Stored Cross-Site Scripting via wpautop() Blockquote Handling
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
CVE-2026-93485
7.2
High
Rafie MuhammadYes
2026-09-17 00:00
WordPress Core <= 7.1 - Missing Authorization to customize_changeset Write via XML-RPC (Multisite/Custom Role edit_css Bypass)
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
5.5
Medium
Ben BidnerYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Post Overwrite
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
4.3
Medium
AnthropicYes
2026-09-17 00:00
WordPress Core <= 7.1 - Authenticated (Author+) Missing Authorization to Comment/Note Reparenting via REST API
WordPress 6.4.11
6.6.7 – 7.1 · 6 branches
N/A
4.3
Medium
viridisYes
Showing 1–10 of 12 reports

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