CVE-2026-109367 json
All in One SEO <= 5.0.3 - Unauthenticated Sensitive Information Disclosure in 's' Search Query Parameter
published 2026-10-31 8 d ago modified 2026-11-02 6 d ago also EUVD-2026-114673
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6 d ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected products
- smub All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- wordfence.com /threat-intel/vulnerabilities/id/75510022-382c-4d03-9c59-1d06349e72bb?source=cve
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Utils/Tags.php#L1494
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Utils/Tags.php#L1393
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Utils/Tags.php#L965
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Utils/Tags.php#L1214
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Meta/Title.php#L116
- plugins.trac.wordpress.org /browser/all-in-one-seo-pack/tags/5.0.3/app/Common/Meta/Helpers.php#L95
- plugins.trac.wordpress.org /changeset/3760115/all-in-one-seo-pack/trunk/app/Common/Utils/Tags.php
Sources
- CVE List CVE-2026-109367
- NVD CVE-2026-109367
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.