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CVE-2026-28139— WordPress Ajax Search Lite plugin <= 4.14.4 - PHP Object Injection vulnerability

Quick assessment

Affected
wpdreams Ajax Search Lite
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 Ajax Search Lite是WordPress基金会的一款实现实时搜索功能的CMS插件。 WordPress Ajax Search Lite 4.14.4及之前版本存在反序列化注入漏洞，该漏洞源于未认证的PHP对象注入。

CVSS 9.8 · Critical EPSS 0.39% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpdreams Ajax Search Lite n/a≤ 4.14.4 affected
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I. Basic Information for CVE-2026-28139

Vulnerability Information
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Vulnerability Title
WordPress Ajax Search Lite plugin <= 4.14.4 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Ajax Search Lite <= 4.14.4 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
WordPress Ajax Search Lite 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Ajax Search Lite是WordPress基金会的一款实现实时搜索功能的CMS插件。 WordPress Ajax Search Lite 4.14.4及之前版本存在反序列化注入漏洞，该漏洞源于未认证的PHP对象注入。
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
wpdreams Ajax Search Lite n/a ~ 4.14.4 -

II. Public POCs for CVE-2026-28139

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III. Intelligence Information for CVE-2026-28139

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Patches & Fixes for CVE-2026-28139 (1)

IV. Related Vulnerabilities

Same product: Ajax Search Lite
Same vendor: wpdreams
Same weakness: CWE-502

V. Comments for CVE-2026-28139

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