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:

$( "#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.

References

• GHSA-9gj3-hwp5-pmwc
• https://nvd.nist.gov/vuln/detail/CVE-2021-41182
• jquery/jquery-ui@6809ce8
• https://blog.jqueryui.com/2021/10/jquery-ui-1-13-0-released/
• https://security.netapp.com/advisory/ntap-20211118-0004/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NXIUUBRVLA4E7G7MMIKCEN75YN7UFERW/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O74SXYY7RGXREQDQUDQD4BPJ4QQTD2XQ/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SNXA7XRKGINWSUIPIZ6ZBCTV6N3KSHES/
• https://lists.debian.org/debian-lts-announce/2022/01/msg00014.html
• https://www.drupal.org/sa-contrib-2022-004
• https://www.drupal.org/sa-core-2022-002
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.tenable.com/security/tns-2022-09
• https://www.oracle.com/security-alerts/cpujul2022.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVKIOWSXL2RF2ULNAP7PHESYCFSZIJE3/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SGSY236PYSFYIEBRGDERLA7OSY6D7XL4/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVKIOWSXL2RF2ULNAP7PHESYCFSZIJE3/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXIUUBRVLA4E7G7MMIKCEN75YN7UFERW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O74SXYY7RGXREQDQUDQD4BPJ4QQTD2XQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGSY236PYSFYIEBRGDERLA7OSY6D7XL4/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SNXA7XRKGINWSUIPIZ6ZBCTV6N3KSHES/
• https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/jquery-ui-rails/CVE-2021-41182.yml