WordPress 5.5.23

WordPress 5.5.23 has 14 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2026; 13 are fixed and 1 remains unpatched as of October 2026. Their average CVSS score is 5.0, and the most serious one scores 8.1 out of 10. Severity breakdown: 0 critical and 3 high. 2026 was the busiest year with 10 disclosures.

The most common weakness is Exposure Of Sensitive Information To An Unauthorized Actor, behind 3 of the records (21%). Other recurring categories include Missing Authorization, Improper Neutralization Of Input During Web Page Generation.

13 of the records (93%) have a vendor fix, while 1 remain unpatched. The oldest unresolved one dates back to 2022.

13 independent researchers contributed these findings, one record each.

Strategic Overview

Avg CVSSMedium

5.0/ 10

Patch Coverage93%

Open

Fixed

Get automatic notifications for all WordPress 5.5.23 vulnerabilities before they are exploited.

Most severe open issueCVSS 4.0CVE-2022-3590

WordPress Core - All known versions - Unauthenticated Blind Server Side Request Forgery

Read the full analysis

Vulnerability Records

14 records


2026-10-28 00:00	WordPress Core 4.7.0 - 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution WordPress 5.5.23 4.7.0 – 7.1.3 · 25 branches	`N/A`	8.1 High	Umut Bayram	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Custom Header Image Data WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.4 Medium	Jeremy Felt	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Post Overwrite WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.3 Medium	Anthropic	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Author+) Missing Authorization to Comment/Note Reparenting via REST API WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.3 Medium	viridis	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Contributor+) Information Exposure via Sample Permalink AJAX Actions WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.3 Medium	hermanhms	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Unauthenticated Stored Cross-Site Scripting via wpautop() Blockquote Handling WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`CVE-2026-93485`	7.2 High	Rafie Muhammad	Yes
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 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	5.5 Medium	Ben Bidner	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Administrator+) Missing Authorization to Network Plugin Activation (Multisite) WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	2.7 Low	Jesse McNeil	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Forced Theme Install/Preview and Selector Injection via Theme Installer Route WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.3 Medium	Paulos Yibelo	Yes
2026-09-17 00:00	WordPress Core <= 7.1 - Authenticated (Author+) Information Exposure via attachment_submitbox_metadata() WordPress 5.5.23 6.6.7 – 7.1 · 6 branches	`N/A`	4.3 Medium	HDWSec	Yes

Showing 1–10 of 14 reports