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CVE-2021-24386— WP SVG Images < 3.4 - Authenticated (author+) Stored XSS via SVG

Quick assessment

Affected
KubiQ WP SVG images
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是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 WordPress的WP SVG Images 存在跨站脚本漏洞，该漏洞源于在3.4之前的WP SVG Images插件没有对上传的SVG文件进行校验。攻击者可利用该漏洞这允许低权限用户(如author+)上传恶意SVG，然后通过诱导其他用户直接访问该文件来执行XSS攻击。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-24386

Vulnerability Information
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Vulnerability Title
WP SVG Images < 3.4 - Authenticated (author+) Stored XSS via SVG
Source: CVE Program / CVE List V5
Vulnerability Description
The WP SVG images WordPress plugin before 3.4 did not sanitise the SVG files uploaded, which could allow low privilege users such as author+ to upload a malicious SVG and then perform XSS attacks by inducing another user to access the file directly. In v3.4, the plugin restricted such upload to editors and admin, with an option to also allow author to do so. The description of the plugin has also been updated with a security warning as upload of such content is intended.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 插件跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress 插件是WordPress开源的一个应用插件。 WordPress的WP SVG Images 存在跨站脚本漏洞，该漏洞源于在3.4之前的WP SVG Images插件没有对上传的SVG文件进行校验。攻击者可利用该漏洞这允许低权限用户(如author+)上传恶意SVG，然后通过诱导其他用户直接访问该文件来执行XSS攻击。
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
KubiQ WP SVG images 3.4 ~ 3.4 -

II. Public POCs for CVE-2021-24386

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III. Intelligence Information for CVE-2021-24386

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Vendor Advisories for CVE-2021-24386 (1)

IV. Related Vulnerabilities

Same product: WP SVG images
Same vendor: KubiQ
Same weakness: CWE-79

V. Comments for CVE-2021-24386

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