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CVE-2026-8493 medium CVSS 5.4

Cross-Site Scripting (XSS) in drupal/colorbox_inline (CVE-2026-8493)

Summary

Cross-site scripting in drupal/colorbox_inline (CVE-2026-8493). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.1.1 or later.

Original description

The description as published by the source.

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Colorbox Inline allows Cross-Site Scripting (XSS).

This issue affects Colorbox Inline: from 0.0.0 before 2.1.1.

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-2026-8493 has been found in drupal/colorbox_inline.
Risk of unauthorized operations or information disclosure. CVSS score: 5.4/10.
What to do: upgrade drupal/colorbox_inline to 2.1.1 or later.
If unsure, ask your IT team or search "drupal/colorbox_inline CVE-2026-8493" on the vendor's site.

CVE-2026-8493 (drupal/colorbox_inline) — CWE-79 / CVSS v3 5.4
Attack vector: remote (network-reachable)
Patched: 2.1.1 — 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 drupal/colorbox_inline.

📍 Affected scope

Check the vendor advisory for the affected versions of drupal/colorbox_inline.

🔥 Severity

Severity: Medium (CVSS 5.4/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 2.1.1.

🛡️ 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 'drupal/colorbox_inline' . 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 'drupal/colorbox_inline' . | 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 drupal/colorbox_inline 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 drupal/colorbox_inline to 2.1.1

    ステージング環境で 2.1.1 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

Packagist:https://packages.drupal.org/8 drupal/colorbox_inline
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1"}],"database_specific":{"constraint":"<2.1.1"}}]

References

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