CVE-2026-9056 — The Talend Administration Center Cross-Site Scripting (XSS)

title: Talend Administration Center Stored XSS Payload Injection - CVE-2026-9056
id: scw-2026-05-20-ai-1
status: experimental
level: high
description: |
  Detects the injection of a known XSS payload into the Talend Administration Center server management endpoint. This rule specifically targets the stored XSS vulnerability (CVE-2026-9056) where an attacker with server management permissions can store a malicious script that is later executed by other users.
author: SCW Feed Engine (AI-generated)
date: 2026-05-20
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-9056/
tags:
  - attack.initial_access
  - attack.t1189
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/tac/administration/server/save'
      cs-method:
          - 'POST'
      cs-uri-query|contains:
          - '<script>alert(document.domain)</script>'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse