CVE-2020-11023 JQuery CVE debrief

Who should care

Application owners, front-end developers, and security teams responsible for websites or web applications that include jQuery, especially if they need to verify vendor mitigation quickly.

Technical summary

The supplied source corpus does not include exploit mechanics, affected-version specifics, or severity scoring. What is supported is that CISA classifies this CVE as a known-exploited jQuery XSS issue and directs defenders to apply vendor mitigations per the official guidance or discontinue use of the product if mitigations are unavailable.

Defensive priority

High — CISA has added this CVE to the Known Exploited Vulnerabilities catalog, so it should be prioritized for inventory, mitigation, and verification work.

Recommended defensive actions

• Inventory web applications and sites that include jQuery.
• Check the linked official jQuery advisory and release announcement for vendor guidance and apply any required mitigation steps.
• Prioritize remediation because the issue appears in CISA's Known Exploited Vulnerabilities catalog.
• If mitigations cannot be applied, discontinue use of the affected product or component per CISA guidance.
• Validate that internet-facing and business-critical systems no longer rely on an unmitigated jQuery deployment.

Evidence notes

This debrief is limited to the supplied KEV metadata and official links. Supported facts include the CVE identifier, the jQuery XSS label, CISA KEV listing, the 2025-01-23 KEV date-added value, the 2025-02-13 due date, and the absence of a supplied CVSS score. No affected-version list or exploit details were provided in the corpus.

Official resources