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CVE-2026-82883— WordPress Login With Ajax plugin <= 4.5.1 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
Marcus Login With Ajax
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 Login With Ajax是WordPress基金会的一款实现无刷新登录的CMS插件。 WordPress Login With Ajax 4.5.1及之前版本存在跨站脚本漏洞，该漏洞源于网页生成期间输入中和不当，可能导致反射型跨站脚本攻击。

CVSS 7.1 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
Marcus Login With Ajax n/a≤ 4.5.1 affected
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I. Basic Information for CVE-2026-82883

Vulnerability Information
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Vulnerability Title
WordPress Login With Ajax plugin <= 4.5.1 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcus Login With Ajax allows Reflected XSS. This issue affects Login With Ajax: from n/a through 4.5.1.
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: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 Login With Ajax 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Login With Ajax是WordPress基金会的一款实现无刷新登录的CMS插件。 WordPress Login With Ajax 4.5.1及之前版本存在跨站脚本漏洞，该漏洞源于网页生成期间输入中和不当，可能导致反射型跨站脚本攻击。
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
Marcus Login With Ajax n/a ~ 4.5.1 -

II. Public POCs for CVE-2026-82883

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III. Intelligence Information for CVE-2026-82883

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Vendor Advisories for CVE-2026-82883 (1)

IV. Related Vulnerabilities

Same product: Login With Ajax
Same weakness: CWE-79

V. Comments for CVE-2026-82883

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