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CVE-2026-109367— All in One SEO <= 5.0.3 - Unauthenticated Sensitive Information Disclosure in 's' Search Query Parameter

Quick assessment

Affected
smub All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
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 插件"All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic（支持 Schema、本地 SEO、站点地图及 SEO 洞察）”在 5.0.3 及更早的所有版本中存在敏感信息泄露漏洞。该漏洞通过's'参数触发，使得未认证的攻击者能够提取任意的非公开文章元数据，包括敏感的自定义字段（例如 API 密钥和内部备注），并将这些内容原样输出至 HTML 标题元素以及 JSON-LD SearchResultsPage 结构化数据中。

CVSS 5.3 · Medium EPSS 0.28% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) ≤ 5.0.3 affected
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I. Basic Information for CVE-2026-109367

Vulnerability Information
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Vulnerability Title
All in One SEO <= 5.0.3 - Unauthenticated Sensitive Information Disclosure in 's' Search Query Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.0.3 via the 's' parameter. This makes it possible for unauthenticated attackers to extract arbitrary non-public post meta values, including sensitive custom fields such as API keys and internal notes, emitted verbatim into the HTML title element and JSON-LD SearchResultsPage schema.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
smub All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) 0 ~ 5.0.3 -

II. Public POCs for CVE-2026-109367

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III. Intelligence Information for CVE-2026-109367

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Other References for CVE-2026-109367 (8)

Same Patch Batch · smub · 2026-10-31 · 3 CVEs total

CVE-2026-76010 8.8 HIGH Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery <= 4.4.1 - Authenticated (Cu
CVE-2026-116563 5.4 MEDIUM Photo Gallery, Sliders, Proofing and Themes <= 4.5.4 - Unauthenticated Stored DOM-Based Cr

IV. Related Vulnerabilities

Same product: All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
Same vendor: smub
Same weakness: CWE-200