CVE-2021-41182Public exploitNetwork attack vector

Script execution via HTML-interpreted altField value

Published Oct 26, 2021 · Updated Feb 13, 2025

Cross-site scripting in the jQuery UI Datepicker before 1.13.0 allows remote attackers to execute script via an untrusted altField option. The _updateAlternate method passes altField to the jQuery constructor, which treats HTML-like input as markup and creates an element whose event handler runs. Exploitation requires an application to accept attacker-controlled option data and a user to interact with affected content; script runs in the page context.

CVSS severity6.5
Medium
EPSS probability39.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the jQuery UI Datepicker before 1.13.0 allows remote attackers to execute script via an untrusted altField option. The _updateAlternate method passes altField to the jQuery constructor, which treats HTML-like input as markup and creates an element whose event handler runs. Exploitation requires an application to accept attacker-controlled option data and a user to interact with affected content; script runs in the page context.

The record

CVE
CVE-2021-41182
Published
Oct 26, 2021
Updated
Feb 13, 2025
Vendor
OpenJS Foundation
Product
jQuery UI
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 1.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenJS Foundation · jQuery UIversion=< 1.13.0

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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

Technologies

Your stack

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Your stack

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