CVE-2020-11023

Potential XSS vulnerability in jQuery

Medium 6.9
Exploited: added to CISA KEV 23 Jan 2025

Description

In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing <option> elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0.

Key facts

Published: 29 Apr 2020
Last changed: 21 Oct 2025
Assigned by: GitHub_M
KEV added: 23 Jan 2025
KEV fix due: 13 Feb 2025
EPSS: 84.887% likely to be exploited in the next 30 days, higher than 99.716% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: no; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

6.9CVSS 3.1, Mediumfrom the CNA (GitHub_M)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
jquery	jQuery	>= 1.0.3, < 3.5.0 (affected)

Timeline

29 Apr 2020 Published
23 Jan 2025 CVE-2020-11023 added to CISA KEV
23 Jan 2025 Added to the CISA KEV catalogue

Weakness

CWE-79

Practice this bug class

HackZoneLabs has a hands-on lab on XSS (stored, reflected, DOM) (CWE-79).

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