CVE-2026-75980 json
BetterDocs <= 4.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Heading 'id' Attribute in Post Content
published 2026-09-01 2 mo ago modified 2026-09-01 2 mo ago also EUVD-2026-68986
- cvss
- 6.4
- 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 28%
- public exploits
- 0
- none known
Summary
The BetterDocs – AI Documentation, Knowledge Base, Docs, Wikis, FAQ with Chatbot plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Heading 'id' Attribute in Post Content in all versions up to, and including, 4.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit survives wp_kses_post because entity-encoded quotes in a heading id attribute are treated as a single legitimate attribute value at save time; the dangerous payload only materialises after process_content_for_toc() calls html_entity_decode() on the stored content and the broken id is extracted by a lazy regex before being echoed unescaped into the Table of Contents output.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpdevteam BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/d1305df9-5002-4352-875c-2dcba7b06c10?source=cve
- plugins.trac.wordpress.org /browser/betterdocs/tags/4.8.1/includes/Utils/Node.php#L22
- plugins.trac.wordpress.org /browser/betterdocs/tags/4.8.1/includes/Shortcodes/ToC.php#L75
- plugins.trac.wordpress.org /browser/betterdocs/tags/4.8.1/includes/Shortcodes/ToC.php#L147
- plugins.trac.wordpress.org /browser/betterdocs/tags/4.8.1/views/shortcodes/toc.php#L50
- plugins.trac.wordpress.org /changeset?reponame=&old=3656697%40betterdocs&new=3656697%40betterdocs
Sources
- CVE List CVE-2026-75980
- NVD CVE-2026-75980
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.