What is the CVSS score of CVE-2026-3220?

CVE-2026-3220 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-3220?

Yes, a public proof-of-concept exploit is available for CVE-2026-3220. Prioritise patching immediately. EPSS: 0.0%.

Is there a patch available for CVE-2026-3220?

Yes, a patch is available for CVE-2026-3220. Update the affected software to the latest version immediately.

WordPress CVE-2026-3220

EUVD-2026-30736 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-05-18 WPScan

GHSA-3jpv-pgxw-p274

WordPress XSS

8.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch available

May 18, 2026 - 09:01 EUVD

CVE Published

May 18, 2026 - 06:00 nvd

UNKNOWN (no severity yet)

DescriptionNVD

The Autoptimize WordPress plugin before 3.1.15, Clearfy Cache WordPress plugin before 2.4.2, Speed Optimizer WordPress plugin before 7.7.9 are vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format.

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

Full analysis requires sign-in

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CVE-2026-3220 vulnerability details – vuln.today

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WordPress CVE-2026-3220

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

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External POC / Exploit Code