WordPress Core 6.4.0 — 7.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Interactivity API Prototype Pollution
554eaea1-d222-4d6d-9351-0aad07a87a80Published · Updated Action summary
Affected: ≤7.1.3Update to 6.4.14 or 6.5.14 or 6.6.11 or 6.7.11 or 6.8.12 or 6.9.11 or 7.0.8 or 7.1.4 or newer
Fixed versions are per release branch: update to the fix for the branch you run.
All remediation steps- Severity
- Medium6.4
- CVSS
- 6.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page7
Am I affected?
WordPress wordpress
- Affected≤ 7.1.3
- Patched in6.4.14 / 6.5.14 / 6.6.11 / 6.7.11 / 6.8.12 / 6.9.11 / 7.0.8 / 7.1.4
Update to 6.4.14 / 6.5.14 / 6.6.11 / 6.7.11 / 6.8.12 / 6.9.11 / 7.0.8 / 7.1.4 or newer.
You are affected if you run ≤ 7.1.3. Version 6.4.14, 6.5.14, 6.6.11, 6.7.11, 6.8.12, 6.9.11, 7.0.8, 7.1.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WordPress.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to one of the following versions, or a newer patched version: 6.4.14, 6.5.14, 6.6.11, 6.7.11, 6.8.12, 6.9.11, 7.0.8, 7.1.4
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WordPress to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to rekter0.
WordPress Core is vulnerable to Stored Cross-Site Scripting via prototype pollution in versions 6.4 through 7.1.3 because Interactivity API contexts, directive names, and property paths can write or resolve reserved prototype keys. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Timeline
CVE published
Severity medium, CVSS 6.4
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.