CVE-2020-11023Known exploitationNetwork attack vector

Script execution via option-element wrapper regex

Published Apr 29, 2020 · Updated Oct 21, 2025

Cross-site scripting in jQuery 1.0.3 through 3.4.1 allows remote attackers to execute script via crafted option-element HTML. A manipulation-path regex wraps option elements in select elements for legacy Internet Explorer parsing, turning sanitized markup into executable DOM content in other browsers. Exploitation requires an application to pass attacker-controlled HTML into html(), append(), or a related DOM manipulation method and a user to render the resulting content.

CVSS severity6.9
Medium
EPSS probability84.89%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in jQuery 1.0.3 through 3.4.1 allows remote attackers to execute script via crafted option-element HTML. A manipulation-path regex wraps option elements in select elements for legacy Internet Explorer parsing, turning sanitized markup into executable DOM content in other browsers. Exploitation requires an application to pass attacker-controlled HTML into html(), append(), or a related DOM manipulation method and a user to render the resulting content.

The record

CVE
CVE-2020-11023
Published
Apr 29, 2020
Updated
Oct 21, 2025
Vendor
jQuery
Product
jQuery
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2020CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.0.3, < 3.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jQuery · jQueryversion=>= 1.0.3, < 3.5.0

Published CVSS scores

6.9GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo