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CVE-2020-11023

Potential XSS vulnerability in jQuery

Exploited in the wild. In CISA KEV since 2025‑01‑23. A vendor fix is available.

CVSS 3.16.9MediumEPSS percentile99th85% chance in 30 daysCISA KEVListedsince 2025-01-23, due 2025-02-13
Public exploit: 4 sourcesFixVendor fixNo build named by the sources

Published Updated Sources: CVE.org, NVD, GitHub, BDU, CSAF

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free Nuclei and OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Discuss checks for your systems with a specialist. Scope is agreed before testing.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
Public exploit
CISA KEV
CISA KEV

Listed as exploited in the wild since 2025-01-23.

US federal agencies must remediate by 2025-02-13.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public exploits

4 sources with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

85% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

The patch came 119 days before any public exploit.

  1. OpenVAS check added
  2. EPSS band changemoderate → high
  3. EPSS band changehigh → moderate
  4. EPSS band changemoderate → high
  5. Public exploit / PoCsource: packetstormnuclei check added
  6. Patch availablerecord updated

Affected products

And 77 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 6.9 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity LowData modification is possible but limited in scope or consequence
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 382 more references. See all after sign-in

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