EUVD-2026-68986
GHSA-xx89-f47v-hmxp
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Stored XSS requires victim page visit (UI:R, not UI:N as provided); all other metrics align with contributor-gated network attack with cross-browser scope change.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Stored cross-site scripting in the BetterDocs WordPress plugin (versions through 4.8.1) allows contributor-level authenticated attackers to inject persistent JavaScript that executes in any visitor's browser context. The flaw exploits a two-stage processing gap: entity-encoded quotes in a heading id attribute pass WordPress's wp_kses_post sanitization at save time, but are later decoded by html_entity_decode() inside process_content_for_toc(), after which a lazy regex extracts the now-unescaped value and echoes it directly into the Table of Contents HTML output. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid WordPress account with at minimum contributor-level role on the target site - anonymous or subscriber-level users cannot create or publish posts and are not a valid attack vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.4 Medium score reflects Scope:Changed (XSS payload executes in the victim browser context outside the plugin) with the PR:L prerequisite for a valid contributor account moderating overall severity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | A code change has been committed to the WordPress plugin SVN repository (changeset 3656697 at https://plugins.trac.wordpress.org/changeset?reponame=&old=3656697%40betterdocs&new=3656697%40betterdocs), indicating upstream fixes are available; however, an exact patched release version number is not independently confirmed from the supplied references - administrators should upgrade to the latest available version above 4.8.1 from the WordPress plugin directory and verify the fix against the Wordfence advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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