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CVE-2020-7656

Cross-Site Scripting (XSS) in jquery (CVE-2020-7656)

Summary

Cross-site scripting in jquery (CVE-2020-7656). Risk of unauthorized operations or information disclosure. Exploitable via jquery. Mitigation: upgrade to 1.9.0 or later.

Original description

The description as published by the source.

Versions of jquery prior to 1.9.0 are vulnerable to Cross-Site Scripting. The load method fails to recognize and remove HTML tags that contain a whitespace character, i.e:, 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.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2020-7656 has been found in jquery.
Attackers can target a specific entry point like jquery over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade jquery to 1.9.0 or later.
If unsure, ask your IT team or search "jquery CVE-2020-7656" on the vendor's site.

CVE-2020-7656 (jquery) — CWE-79
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: jquery
Patched: 1.9.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Cross-site scripting (XSS) (CWE-79) exists in jquery. Attackers reach the vulnerable code path via jquery without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of jquery. Attack surface: jquery.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 1.9.0.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'jquery' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'jquery' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で jquery を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade jquery to 1.9.0

    ステージング環境で 1.9.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

npm jquery
[{"type":"SEMVER","events":[{"introduced":"1.2.1"},{"fixed":"1.9.0"}]}]
NuGet jQuery
[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.1"},{"fixed":"1.9.0"}]}]
RubyGems jquery-rails
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]
Maven org.webjars.npm:jquery
[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.1"},{"fixed":"1.9.0"}]}]

References

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