Medium

XSS in the `altField` option of the Datepicker widget in jquery-ui

  • Disclosed: 26.10.2021
  • Updated: 11.10.2026 11:23

Impact

Accepting the value of the altField option of the Datepicker widget from untrusted sources may execute untrusted code. For example, initializing the datepicker in the following way:

js
$( "#datepicker" ).datepicker( {
	altField: "<img onerror='doEvilThing()' src='/404' />",
} );

will call the doEvilThing function.

Patches

The issue is fixed in jQuery UI 1.13.0. Any string value passed to the altField option is now treated as a CSS selector.

Workarounds

A workaround is to not accept the value of the altField option from untrusted sources.

For more information

If you have any questions or comments about this advisory, search for a relevant issue in the jQuery UI repo. If you don't find an answer, open a new issue.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.webjars.npm:jquery-ui < 1.13.0 1.13.0
npm package jquery-ui < 1.13.0 1.13.0
.NET (NuGet) jQuery.UI.Combined < 1.13.0 1.13.0

References

CVSS score 6.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-79
Platform
Java / Kotlin (Maven), npm, .NET (NuGet)
Package
org.webjars.npm:jquery-ui, jquery-ui, jQuery.UI.Combined
Disclosed
26.10.2021
Updated
11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-9gj3-hwp5-pmwc - CC BY 4.0

Vulnerability history: org.webjars.npm:jquery-ui

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
7
First → latest
10.2017 07.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Medium 7

Disclosures per year

  1. 2017: 3
  2. 2018: 0
  3. 2019: 0
  4. 2020: 0
  5. 2021: 3
  6. 2022: 1
  7. 2023: 0
  8. 2024: 0
  9. 2025: 0
  10. 2026: 0
  1. Medium · 6.5 CVE-2021-41183 < 1.13.0 1.13.0
  2. Medium · 6.5 CVE-2021-41184 < 1.13.0 1.13.0
  3. XSS in the `altField` option of the Datepicker widget in jquery-ui this entry
    Medium · 6.5 CVE-2021-41182 < 1.13.0 1.13.0
  4. Medium · 6.1 CVE-2010-5312 >= 1.7.0, < 1.10.0 1.10.0
  5. Medium CVE-2012-6662 < 1.10.0 1.10.0
  6. Medium · 6.1 CVE-2016-7103 < 1.12.0 1.12.0

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