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VulnerabilityPublished

CVE-2026-109367: All in One SEO (WordPress plugin) · Information Exposure

Affects All in One SEO (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 31 Oct 2026, 08:52 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Wordfence)CVSS 3.15.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
smubAll in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)Affected
  • <=5.0.3
Fixed in–

AI-suggested

Users should monitor the vendor's advisory channels for updates. Until a fix is available, consider restricting access to sensitive post meta data or disabling the vulnerable plugin functionality if feasible. Avoid exposing sensitive custom fields in publicly accessible content.

Description

The All in One SEO – AI SEO Plugin for WordPress up to version 5.0.3 contains a vulnerability that allows unauthenticated attackers to extract sensitive non-public post meta data. This includes sensitive custom fields such as API keys and internal notes, which are exposed via the 's' parameter and included verbatim in the HTML title element and JSON-LD SearchResultsPage schema. The vulnerability is classified as CWE-200, Exposure of Sensitive Information to an Unauthorized Actor.

References

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