CVE-2020-11023

JQuery: Cross-Site Scripting (XSS)

As of , CVE-2020-11023 in JQuery is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 23 January 2025
US federal deadline
13 February 202521 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.85Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.04 on 23 January 2025EPSS on the day CISA listed it.
Public exploit
1 Exploit-DB entry
Fix
Vendor advice: blog.jquery.com and github.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

  • github.comThis vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used…
  • blog.jquery.com

What the flaw is

JQuery contains a persistent cross-site scripting (XSS) vulnerability. When passing maliciously formed, untrusted input enclosed in HTML tags, JQuery's DOM manipulators can execute untrusted code in the context of the user's browser.

CISA's 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.

The CVE record's description, from GitHub_M

CVE published
29 April 2020
Assigned by
GitHub_M
CVSS
6.9 Medium (CVSS 3.1, from the CNA)
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 49767).
  3. CISA added it to its list of exploited vulnerabilities.
  4. The US federal deadline to fix it.
  5. CISA changed its entry. Edited: notes.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

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