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CVE-2026-27537— WordPress Popup by Supsystic plugin <= 1.11.2 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
supsystic Popup by Supsystic
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 Smart Popup by Supsystic是WordPress基金会开源的一款创建弹窗的CMS插件。 WordPress Smart Popup by Supsystic 1.11.2及之前版本存在跨站脚本漏洞，该漏洞源于未对用户输入进行有效清理和转义，可能导致未经身份验证的攻击者进行跨站脚本攻击。

CVSS 6.5 · Medium EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
supsystic Popup by Supsystic n/a≤ 1.11.2 affected
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I. Basic Information for CVE-2026-27537

Vulnerability Information
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Vulnerability Title
WordPress Popup by Supsystic plugin <= 1.11.2 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Cross Site Scripting (XSS) in Popup by Supsystic <= 1.11.2 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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 Smart Popup by Supsystic 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Smart Popup by Supsystic是WordPress基金会开源的一款创建弹窗的CMS插件。 WordPress Smart Popup by Supsystic 1.11.2及之前版本存在跨站脚本漏洞，该漏洞源于未对用户输入进行有效清理和转义，可能导致未经身份验证的攻击者进行跨站脚本攻击。
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
supsystic Popup by Supsystic n/a ~ 1.11.2 -

II. Public POCs for CVE-2026-27537

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III. Intelligence Information for CVE-2026-27537

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Vendor Advisories for CVE-2026-27537 (1)

IV. Related Vulnerabilities

Same product: Popup by Supsystic
Same vendor: supsystic
Same weakness: CWE-79

V. Comments for CVE-2026-27537

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