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CVE-2021-34640— Securimage-WP-Fixed <= 3.5.4 Reflected Cross-Site Scripting

Quick assessment

Affected
Securimage-WP-Fixed Securimage-WP-Fixed
Exploitation
Public or AI PoC available; prioritize validation
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（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 plugin Securimage-WP-Fixed 存在跨站脚本漏洞，该漏洞源于在3.5.4及以下版本中securimage-wp.php文件中使用了$ SERVER[PHP SELF]。攻击者可利用该漏洞注入任意的web脚本，从而受到跨站脚本的攻击。

CVSS 6.1 · Medium EPSS 2.31% · P82

Public Exploits 1

Nuclei · 1 CVE-2021-34640.yaml [template]

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-34640

Vulnerability Information
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Vulnerability Title
Securimage-WP-Fixed <= 3.5.4 Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Securimage-WP-Fixed WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/securimage-wp.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.5.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（Wordpress）基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress plugin Securimage-WP-Fixed 存在跨站脚本漏洞，该漏洞源于在3.5.4及以下版本中securimage-wp.php文件中使用了$ SERVER[PHP SELF]。攻击者可利用该漏洞注入任意的web脚本，从而受到跨站脚本的攻击。
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
Securimage-WP-Fixed Securimage-WP-Fixed 3.5.4 ~ 3.5.4 -

II. Public POCs for CVE-2021-34640

# POC Description Source Link Shenlong Link
1 WordPress Securimage-WP-Fixed plugin 3.5.4 and prior contains a cross-site scripting vulnerability due to the use of $_SERVER['PHP_SELF'] in the ~/securimage-wp.php file, which allows attackers to inject arbitrary web scripts. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-34640.yaml POC Details
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III. Intelligence Information for CVE-2021-34640

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Patches & Fixes for CVE-2021-34640 (1)

Vendor Advisories for CVE-2021-34640 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2021-34640

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