CVE-2026-104001 json
Slim SEO <= 4.11.1 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'Biographical Info' User Meta
published 24d ago modified 24d ago also EUVD-2026-102669
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
The The Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.11.1 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes. A Subscriber-level user need only save the shortcode payload to their own Biographical Info field via the REST API or wp-admin profile page; the shortcode then executes on any unauthenticated front-end request that resolves that author's description, such as requests using the ?author= query parameter when auto_redirection is disabled.
Patch / fix
- github.com/elightup/slim-seo#296 pull request
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 24d ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected products
- rilwis Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
- Technology feeds
References
- github.com /elightup/slim-seo/pull/296
- wordfence.com /threat-intel/vulnerabilities/id/7a7c53b9-e9b6-4337-9c89-326e66c4bd27?source=cve
- plugins.trac.wordpress.org /browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L26
- plugins.trac.wordpress.org /browser/slim-seo/tags/4.11.0/src/MetaTags/Data.php#L76
- plugins.trac.wordpress.org /browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L168
- plugins.trac.wordpress.org /changeset?reponame=&new=3742833%40slim-seo%2Ftags%2F4.11.2&old=3717070%40slim-seo%2Ftags%2F4.11.0
Sources
- CVE List CVE-2026-104001
- NVD CVE-2026-104001
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