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Medium, CVSS 5.3amended

Cross-Site Scripting in jquery

CVE-2020-7656GHSA-q4m3-2j7h-f7xw

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (jquery 1.9.0; jquery 1.9.0; org.webjars.npm:jquery 1.9.0; jquery-rails 2.2.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N · score source
EPSS
  • CVE-2020-7656: 6.43% estimated exploitation activity in the next 30 days; percentile 93.72 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Versions of jquery prior to 1.9.0 are vulnerable to Cross-Site Scripting. The load method fails to recognize and remove <script HTML tags that contain a whitespace character, i.e: </script , which results in the enclosed script logic to be executed. This allows attackers to execute arbitrary JavaScript in a victim's browser. Recommendation Upgrade to version 1.9.0 or later.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-q4m3-2j7h-f7xw

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-q4m3-2j7h-f7xw

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2020-7656

Advisory: Cross-Site Scripting in jquery
IDs: CVE-2020-7656, GHSA-q4m3-2j7h-f7xw
Record: https://patchnext.com/advisories/cve-2020-7656 (revision 3, source checked 26 Oct 2026, 12:31 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: jquery 1.9.0; jquery 1.9.0; org.webjars.npm:jquery 1.9.0; jquery-rails 2.2.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- NuGet jquery: affected >= 1.2.1, < 1.9.0; fixed in 1.9.0
- npm jquery: affected >= 1.2.1, < 1.9.0; fixed in 1.9.0
- Maven org.webjars.npm:jquery: affected >= 1.2.1, < 1.9.0; fixed in 1.9.0
- RubyGems jquery-rails: affected < 2.2.0; fixed in 2.2.0

## Suggested inspection (read-only)
- NuGet jquery: check the installed version with your package manager.
- `npm ls jquery --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- Maven org.webjars.npm:jquery: check the installed version with your package manager.
- RubyGems jquery-rails: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on jquery, org.webjars.npm:jquery, jquery-rails.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-q4m3-2j7h-f7xw (OSV record GHSA-q4m3-2j7h-f7xw lists affected ranges: npm jquery >=1.2.1 =1.2.1 =0 =1.2.1 <1.9.0 (fixed))
- Verified: https://github.com/advisories/GHSA-q4m3-2j7h-f7xw (GitHub-reviewed advisory GHSA-q4m3-2j7h-f7xw lists affected ranges: RubyGems jquery-rails >=0 =1.2.1 =1.2.1 =1.2.1 <1.9.0)

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