CVE-2020-11023: JQuery Cross-Site Scripting (XSS) Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on , 1,730 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 84.9%
EPSS score, percentile 99.7 of all scored records
- How severe?
- 6.9 Medium
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA deadline . Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Which versions are affected?
Affected
- >= 1.0.3, < 3.5.0
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
What to do
Required action, set by CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date for this action: .
Advisories and patches
- DSA-4693
- FEDORA-2020-36d2db5f51
- openSUSE-SU-2020:1060
- GLSA-202007-03
- openSUSE-SU-2020:1106
- FEDORA-2020-fbb94073a1
- FEDORA-2020-0b32a59b54
- FEDORA-2020-fe94df8c34
- openSUSE-SU-2020:1888
Linked from CISA's catalog entry
- https://github.com/jquery/jquery/security/advisories/GHSA-jpcq-cgw6-v4j6
- https://blog.jquery.com/2020/04/10/jquery-3-5-0-released/
- https://nvd.nist.gov/vuln/detail/CVE-2020-11023
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | >= 1.0.3, < 3.5.0 |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
About this vulnerability
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.
Summary: CISA's KEV catalog, as of .
- CISA added CVE-2020-11023 to its Known Exploited Vulnerabilities (KEV) catalog on 23 Jan 2025.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 13 Feb 2025.
- The CVE record was published on 29 Apr 2020, 1,730 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 6.9 (Medium), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 84.9% (percentile 99.7), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact partial.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of . About the data.
Description
Potential XSS vulnerability in jQuery
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.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
Weakness
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| Added to CISA KEV | |
| CISA due date for the required action | |
| CVE record last updated |
References
53 more in the CVE record.