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PatchSiren cyber security CVE debrief

CVE-2026-10738 weaverlancegmailcom CVE debrief

The jQuery Hover Footnotes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Footnote Qualifier ('{{...}}' Syntax) in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The attribute-breakout payload (e.g., a double-quote followed by an event handler) contains no angle brackets and therefore bypasses WordPress core's wp_kses_post() filtering, which only strips disallowed HTML tags rather than sanitizing attribute contexts.

Vendor
weaverlancegmailcom
Product
jQuery Hover Footnotes
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Users of the jQuery Hover Footnotes plugin for WordPress, particularly those with author-level access and above, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability has a CVSS score of 6.4 and is classified as MEDIUM severity. It can be exploited via the Footnote Qualifier syntax, allowing attackers to inject arbitrary web scripts.

Defensive priority

High

Recommended defensive actions

  • Update the jQuery Hover Footnotes plugin to a version beyond 1.4.
  • Restrict access to the plugin's settings and functionality to trusted users only.
  • Regularly monitor pages for injected scripts and suspicious activity.

Evidence notes

Evidence for this CVE comes from the National Vulnerability Database (NVD) and Wordfence security research.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-10738 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-10738

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-10738 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-10738

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.