CVE-2026-4142
Sentence To SEO (keywords, description and tags) <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Permanent keywords' Field
- 4.4MediumCVSS base score
- 0.33%Exploitation in 30 daysEPSS · top 74% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Sentence To SEO (keywords, description and tags) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Permanent keywords' field in all versions up to and including 1.0. This is due to insufficient input sanitization and output escaping. The plugin reads user input via filter_input_array(INPUT_POST) which applies no HTML sanitization (FILTER_DEFAULT), stores it unsanitized to the WordPress options table via update_option(), and then outputs the stored value directly into a textarea element without any escaping using PHP short echo tags (<?= ?>). An attacker can break out of the textarea element using a closing </textarea> tag and inject arbitrary HTML/JavaScript. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the plugin's settings page.
Timeline
ID reserved
By Wordfence
- 40 days later
· 40 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.33% · top 74% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
eazyserver · Sentence To SEO (keywords, description and tags)
- affected ≤ 1.0
References
References11
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7d11b2db-d097-433f-923c-f49ef2951c0e?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L81 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L81 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L50 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L50 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L262 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L262 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L87 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L87 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L75 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L75 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-24684 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-4142)Record last updated .