Cross-site scripting in stats method (object cache) in WordPress

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• wordpress wordpress3.7 and later · before 3.7.33
• wordpress wordpress3.8 and later · before 3.8.33
• wordpress wordpress3.9 and later · before 3.9.31
• wordpress wordpress4.0 and later · before 4.0.30
• wordpress wordpress4.1 and later · before 4.1.30
• wordpress wordpress4.2 and later · before 4.2.27
• wordpress wordpress4.3 and later · before 4.3.23
• wordpress wordpress4.4 and later · before 4.4.22
• wordpress wordpress4.5 and later · before 4.5.21
• wordpress wordpress4.6 and later · before 4.6.18
• wordpress wordpress4.7 and later · before 4.7.17
• wordpress wordpress4.8 and later · before 4.8.13
• wordpress wordpress4.9 and later · before 4.9.14
• wordpress wordpress5.0 and later · before 5.0.9
• wordpress wordpress5.1 and later · before 5.1.5
• wordpress wordpress5.2 and later · before 5.2.6
• wordpress wordpress5.3 and later · before 5.3.3
• wordpress wordpress5.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

• WordPress WordPress

  • >= 5.4.0, < 5.4.1, >= 5.3.0, < 5.3.3, >= 5.2.0, < 5.2.6, >= 5.1.0, < 5.1.5, >= 5.0.0, < 5.0.9, >= 4.9.0, < 4.9.14, >= 4.8.0, < 4.8.13, >= 4.7.0, < 4.7.17, >= 4.6.0, < 4.6.18, >= 4.5.0, < 4.5.21, >= 4.4.0, < 4.4.22, >= 4.3.0, < 4.3.23 … (+6)affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-87902An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the KEV
  74This week
• CVE-2026-63030WordPress < 7.0.2 - REST API batch-route confusion and SQL injection issue leading to Remote Code ExecutionKEV
  72This week
• CVE-2026-60137WordPress < 7.0.2 - Facilitated SQL Injection via author__not_in in WP_QueryKEV
  60This week

Published before and after this one in the same product

• ← EarlierCVE-2020-11027Apr 30, 2020 · Password reset links invalidation issue in WordPress
  36Monitor
• ← EarlierCVE-2020-11028Apr 30, 2020 · Unauthenticated disclosure of certain private posts in WordPress
  31Monitor
• Later →CVE-2020-11030Apr 30, 2020 · Cross-site scripting (XSS) in Search block in WordPress
  21Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1commentEl.innerHTML = comment.body;

1commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.