CVE-2026-13340— SVG Support < 2.5.17 - Author+ Stored XSS via .svgz Sanitization Bypass
Quick assessment
Affected
Unknown SVG Support
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WordPress SVG Support是WordPress基金会的一款让WordPress支持SVG文件的插件。 WordPress SVG Support 2.5.17之前版本存在安全漏洞，该漏洞源于对使用.svgz扩展名上传的文件未进行SVG清理，可能允许具有SVG上传权限的用户存储包含脚本的文件，在包括管理员在内的查看者浏览器中执行。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | SVG Support | < 2.5.17 |
affected |
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I. Basic Information for CVE-2026-13340
Vulnerability Information
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Vulnerability Title
SVG Support < 2.5.17 - Author+ Stored XSS via .svgz Sanitization Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
The SVG Support WordPress plugin before 2.5.17 does not apply its SVG sanitisation to uploaded files using the .svgz extension, even though it registers and serves them as SVG, allowing a user permitted to upload SVGs (such as an Author once granted upload access) to store a script-bearing file that executes in the browser of anyone who later views it, including an administrator.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress SVG Support 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress SVG Support是WordPress基金会的一款让WordPress支持SVG文件的插件。 WordPress SVG Support 2.5.17之前版本存在安全漏洞，该漏洞源于对使用.svgz扩展名上传的文件未进行SVG清理，可能允许具有SVG上传权限的用户存储包含脚本的文件，在包括管理员在内的查看者浏览器中执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | SVG Support | 0 ~ 2.5.17 | - |
|
II. Public POCs for CVE-2026-13340
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-13340 (1)
-
🔗 SVG Support < 2.5.17 – Author+ Stored XSS via .svgz Sanitization Bypass | CVE 2026-13340 | Plugin Vulnerabilities Read full article exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-08-03 · 27 CVEs total
| CVE-2026-16060 | Insert or Embed Articulate Content into WordPress <= 4.3000000027 - Editor+ Arbitrary File | |
| CVE-2026-16057 | Contest Gallery < 30.0.7 - Author+ Arbitrary Post Deletion via post_cg_youtube_delete_from | |
| CVE-2026-16274 | Classified Listing < 5.4.4 - Contributor+ Unpublished Post Content Disclosure via rtcl_blo | |
| CVE-2026-15254 | Simply Schedule Appointments < 1.6.12.11 - Contributor+ Sensitive Data Disclosure via Admi | |
| CVE-2025-15672 | Chama < 1.0.13 - Unauthenticated PHP Object Injection | |
| CVE-2025-15673 | Import and export users and customers < 2.4.3 - Admin+ Arbitrary File Read | |
| CVE-2026-16532 | Link Library < 7.9.3 - Unauthenticated SQL Injection via the Front-End Link Submission For | |
| CVE-2026-16534 | Import and export users and customers < 2.4.2 - Custom Role Privilege Escalation to Admini | |
| CVE-2026-16276 | Classified Listing < 5.4.4 - Contributor+ Store Revenue Total Disclosure via rtcl_revenue_ | |
| CVE-2026-12872 | Webinfos <= 1.2 - Unauthenticated Arbitrary File Upload | |
| CVE-2026-12965 | Super Store Finder < 7.11 - Unauthenticated SQL Injection via ssf_tracking | |
| CVE-2026-14557 | SoftMarket <= 1.0.0 - Unauthenticated Account Takeover via Email Verification Bypass | |
| CVE-2026-15231 | TaxoPress < 3.51.0 - Contributor+ Private Post Disclosure via IDOR | |
| CVE-2026-16565 | Dokan < 5.0.9 - Vendor+ Cross-Vendor Product Attribute Modification via Product Attribute | |
| CVE-2026-16250 | Personal QR Message <= 1.0 - Unauthenticated Arbitrary File Upload | |
| CVE-2026-15383 | Blog Floating Button <= 1.4.20 - Unauthenticated Stored XSS via User-Agent Header | |
| CVE-2026-15260 | Geo My WP < 4.5.5.3 - Subscriber+ Arbitrary Geolocation Record Modification and Deletion v | |
| CVE-2026-15931 | Simple Membership < 4.7.8 - Unauthenticated Stored XSS via PayPal Subscription Subscriber | |
| CVE-2026-15930 | Simple Membership < 4.7.8 - Unauthenticated Administrator Account Takeover via Registratio | |
| CVE-2026-16539 | SM Page Duplicator <= 1.0.0 - Editor+ SQL Injection via Page Duplication |
Showing top 20 of 27 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: SVG Support
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CVE-2022-4022
WordPress plugin SVG Support 跨站脚本漏洞 -
CVE-2022-1755
SVG Support < 2.5 - Author+ Stored Cross-Site Scripting
Same vendor: Unknown
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V. Comments for CVE-2026-13340
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