CVE-2026-3220— Multiple Plugins - Unauthenticated Stored XSS via Minify Library
Possible ATT&CK Techniques 3AI
T1071 · Application Layer Protocol T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseGet alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-3220
Vulnerability Information
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Vulnerability Title
Multiple Plugins - Unauthenticated Stored XSS via Minify Library
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Autoptimize | 0 ~ 3.1.15 | - | |
| Unknown | Clearfy Cache | 0 ~ 2.4.2 | - | |
| Unknown | Speed Optimizer | 0 ~ 7.7.9 | - |
II. Public POCs for CVE-2026-3220
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://wpscan.com/vulnerability/3ceabf11-23cd-4c38-ba14-014348b0ff2d/exploitvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-3220
Same Patch Batch · Unknown · 2026-05-18 · 5 CVEs total
| CVE-2026-6381 | WP Maps < 4.9.3 - Subscriber+ Local File Inclusion | |
| CVE-2026-6495 | Ajax Load More < 7.8.4 - Reflected XSS | |
| CVE-2026-6379 | WP Photo Album Plus < 9.1.11.001 - Unauthenticated SQL Injection via 'wppa-supersearch' Pa | |
| CVE-2026-1631 | Feeds for YouTube < 2.6.4 - Subscriber+ License Data Deletion |
IV. Related Vulnerabilities
Same product: Autoptimize
- CVE-2026-2430
Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored - CVE-2026-2352
Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored - CVE-2025-13401
Autoptimize <= 3.1.13 - Authenticated (Contributor+) Stored - CVE-2023-2113
Autoptimize < 3.1.7 - Admin+ Stored Cross-Site Scripting via - CVE-2022-4057
Autoptimize < 3.1.0 - Sensitive Data Disclosure
Same vendor: Unknown
- CVE-2026-6381
WP Maps < 4.9.3 - Subscriber+ Local File Inclusion - CVE-2026-6495
Ajax Load More < 7.8.4 - Reflected XSS - CVE-2026-6379
WP Photo Album Plus < 9.1.11.001 - Unauthenticated SQL Injec - CVE-2026-1631
Feeds for YouTube < 2.6.4 - Subscriber+ License Data Deletio - CVE-2026-6433
Custom CSS JS PHP <= 2.0.7 - Unauthenticated SQL Injection t
V. Comments for CVE-2026-3220
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