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HIGHCVE-2026-21821CVSS 8.3

CVE-2026-21821: XSS in HCL BigFix SCM Reporting

プラットフォーム

javascript

コンポーネント

jquery

NVDで見る
保存
あなたの言語に翻訳中…

CVE-2026-21821 identifies a Cross-Site Scripting (XSS) vulnerability within the HCL BigFix SCM Reporting site. This vulnerability arises from the use of an outdated and unsupported version of the jQuery 1.x library. Exploitation could allow attackers to inject malicious scripts, potentially leading to data theft or unauthorized actions. Versions 1.0.0 through 11.0.5 are affected, and a fix is available via upgrading jQuery.

影響と攻撃シナリオ翻訳中…

The presence of an outdated jQuery library in HCL BigFix SCM Reporting creates a significant attack surface. Attackers can leverage publicly known vulnerabilities within jQuery 1.x to execute arbitrary JavaScript code within the context of a user's browser. This could manifest as stealing session cookies, redirecting users to malicious websites, or defacing the reporting site. The impact extends beyond the reporting site itself, as a successful attack could potentially compromise the underlying BigFix infrastructure if user credentials or sensitive data are exposed. The lack of security updates for jQuery 1.x means that newly discovered vulnerabilities will not be patched, increasing the long-term risk.

悪用の状況翻訳中…

CVE-2026-21821 was published on May 13, 2026. The vulnerability's severity is rated HIGH (CVSS 8.3). As jQuery 1.x is end-of-life, numerous known vulnerabilities exist within the library, making exploitation relatively straightforward. Public proof-of-concept exploits are likely to emerge, increasing the risk of active campaigns. Monitor security advisories from HCL and jQuery for further updates and mitigation guidance.

脅威インテリジェンス

エクスプロイト状況

概念実証不明
CISA KEVNO
インターネット露出高

CISA SSVC

悪用状況none
自動化可能no
技術的影響total

CVSS ベクトル

脅威インテリジェンス· CVSS 3.1CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H8.3HIGHAttack VectorNetwork攻撃者がターゲットに到達する方法Attack ComplexityHigh悪用に必要な条件Privileges RequiredNone攻撃に必要な認証レベルUser InteractionRequired被害者の操作が必要かどうかScopeChanged影響コンポーネント外への波及ConfidentialityHigh機密データ漏洩のリスクIntegrityHigh不正データ改ざんのリスクAvailabilityHighサービス障害のリスクnextguardhq.com · CVSS v3.1 基本スコア
これらのメトリクスの意味は？
Attack Vector
ネットワーク — インターネット経由でリモートから悪用可能。物理・ローカルアクセス不要。
Attack Complexity
高 — 競合条件、非標準設定、または特定の状況が必要。悪用が難しい。
Privileges Required
なし — 認証不要。資格情報なしで悪用可能。
User Interaction
必要 — 被害者がファイルを開く、リンクをクリックするなどのアクションが必要。
Scope
変化あり — 攻撃が脆弱なコンポーネントを超えて他のシステムに波及可能。
Confidentiality
高 — 機密性の完全喪失。全データが読み取り可能。
Integrity
高 — 任意のデータの書き込み・変更・削除が可能。
Availability
高 — 完全なクラッシュまたはリソース枯渇。完全なサービス拒否。

影響を受けるソフトウェア

コンポーネントjquery
ベンダーHCLSoftware
最小バージョン1.0.0
最大バージョン11.0.5

弱点分類 (CWE)

CWE-1104

タイムライン

  1. 予約済み
  2. 公開日
  3. 更新日

緩和策と回避策翻訳中…

The primary mitigation for CVE-2026-21821 is to upgrade the jQuery library to a supported version. HCL should provide updated versions of BigFix SCM Reporting with a patched jQuery library. If a direct upgrade is not immediately feasible, consider implementing a Content Security Policy (CSP) to restrict the execution of inline scripts and limit the sources from which scripts can be loaded. Furthermore, a Web Application Firewall (WAF) can be configured to filter out malicious JavaScript payloads targeting jQuery functions. Verify the upgrade by testing the reporting site for XSS vulnerabilities after applying the patch.

修正方法翻訳中…

Actualice la biblioteca jQuery a una versión compatible y con soporte. HCL recomienda actualizar a una versión de jQuery que reciba actualizaciones de seguridad y correcciones de errores.

よくある質問翻訳中…

What is CVE-2026-21821 — XSS in HCL BigFix SCM Reporting?

CVE-2026-21821 is a HIGH severity vulnerability affecting HCL BigFix SCM Reporting versions 1.0.0–11.0.5. It's caused by an outdated jQuery library, allowing attackers to inject malicious scripts via Cross-Site Scripting (XSS).

Am I affected by CVE-2026-21821 in HCL BigFix SCM Reporting?

If you are using HCL BigFix SCM Reporting versions between 1.0.0 and 11.0.5, you are potentially affected. Check your jQuery version to confirm.

How do I fix CVE-2026-21821 in HCL BigFix SCM Reporting?

Upgrade to a patched version of HCL BigFix SCM Reporting that includes a supported jQuery version. Implement a Content Security Policy (CSP) as an interim measure.

Is CVE-2026-21821 being actively exploited?

While no active campaigns are currently confirmed, the vulnerability's severity and the age of the jQuery library suggest a high likelihood of exploitation. Monitor security advisories closely.

Where can I find the official HCL advisory for CVE-2026-21821?

Refer to the HCL Support website and security advisories for the latest information and official guidance regarding CVE-2026-21821. Search for 'HCL BigFix SCM Reporting security advisories'.

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