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CVE-2026-73380— WordPress Popup by Supsystic plugin <= 1.13.0 - PHP Object Injection 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.

supsystic Popup by Supsystic是supsystic公司的一款创建弹窗的网站插件。 supsystic Popup by Supsystic 1.13.0及之前版本存在反序列化注入漏洞，该漏洞源于容易受到未经身份验证的PHP对象注入攻击。

CVSS 9.8 · Critical EPSS 0.53% · P42

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
supsystic Popup by Supsystic n/a≤ 1.13.0 affected
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I. Basic Information for CVE-2026-73380

Vulnerability Information
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Vulnerability Title
WordPress Popup by Supsystic plugin <= 1.13.0 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Popup by Supsystic <= 1.13.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
supsystic Popup by Supsystic 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
supsystic Popup by Supsystic是supsystic公司的一款创建弹窗的网站插件。 supsystic Popup by Supsystic 1.13.0及之前版本存在反序列化注入漏洞，该漏洞源于容易受到未经身份验证的PHP对象注入攻击。
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 ~ 1.13.0 -

II. Public POCs for CVE-2026-73380

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-73380

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Other References for CVE-2026-73380 (1)

Same Patch Batch · supsystic · 2026-08-18 · 9 CVEs total

CVE-2026-73376 9.8 CRITICAL WordPress Ultimate Maps by Supsystic plugin < 1.5.0 - PHP Object Injection vulnerability
CVE-2026-73366 9.8 CRITICAL WordPress Easy Google Maps plugin <= 1.13.0 - PHP Object Injection vulnerability
CVE-2026-73381 9.1 CRITICAL WordPress Popup by Supsystic plugin <= 1.13.0 - Broken Authentication vulnerability
CVE-2026-73377 7.5 HIGH WordPress Ultimate Maps by Supsystic plugin < 1.5.0 - Broken Access Control vulnerability
CVE-2026-73367 7.2 HIGH WordPress Easy Google Maps plugin < 1.14.2 - Remote File Inclusion vulnerability
CVE-2026-73375 7.1 HIGH WordPress Ultimate Maps by Supsystic plugin < 1.5.0 - Cross Site Scripting (XSS) vulnerabi
CVE-2026-73378 7.1 HIGH WordPress Contact Form by Supsystic plugin < 1.10.0 - Cross Site Scripting (XSS) vulnerabi
CVE-2026-73379 6.5 MEDIUM WordPress Contact Form by Supsystic plugin < 1.10.0 - Bypass Vulnerability vulnerability

IV. Related Vulnerabilities

Same product: Popup by Supsystic
Same vendor: supsystic
Same weakness: CWE-502

V. Comments for CVE-2026-73380

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