CVE-2020-11023

KEVJQuery Cross-Site Scripting (XSS) Vulnerability

Description

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.

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.

CVSS 3.1 vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

PublishedApr 29, 2020

Last modifiedJun 17, 2026

Added to KEVJan 23, 2025

Remediation dueFeb 13, 2025

References

lists.opensuse.org/opensuse-security-announce/2020-07/msg00067.htmlBroken Link
lists.opensuse.org/opensuse-security-announce/2020-07/msg00085.htmlBroken Link
lists.opensuse.org/opensuse-security-announce/2020-11/msg00039.htmlBroken LinkMailing List
packetstormsecurity.com/files/162160/jQuery-1.0.3-Cross-Site-Scripting.htmlExploitThird Party Advisory
blog.jquery.com/2020/04/10/jquery-3-5-0-releasedRelease NotesVendor Advisory
github.com/jquery/jquery/security/advisories/GHSA-jpcq-cgw6-v4j6Third Party Advisory
jquery.com/upgrade-guide/3.5/Release NotesVendor Advisory
lists.apache.org/thread.html/r0483ba0072783c2e1bfea613984bfb3c86e73ba8879d780dc1cc7d36%40%3Cissues.flink.apache.org%3EIssue TrackingMailing List
lists.apache.org/thread.html/r0593393ca1e97b1e7e098fe69d414d6bd0a467148e9138d07e86ebbb%40%3Cissues.hive.apache.org%3EIssue TrackingMailing List
lists.apache.org/thread.html/r07ab379471fb15644bf7a92e4a98cbc7df3cf4e736abae0cc7625fe6%40%3Cdev.felix.apache.org%3EIssue TrackingMailing List
lists.apache.org/thread.html/r094f435595582f6b5b24b66fedf80543aa8b1d57a3688fbcc21f06ec%40%3Cissues.hive.apache.org%3EIssue TrackingMailing List
lists.apache.org/thread.html/r1fed19c860a0d470f2a3eded12795772c8651ff583ef951ddac4918c%40%3Cgitbox.hive.apache.org%3EIssue TrackingMailing List

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Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 621 days
CVSS: 6.9 MEDIUM
EPSS (30-day exploit probability): 84.9% · top 1% of all CVEs
Weakness: CWE-79
Attack vector: Network, remotely reachable

Recommended actions

1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.