Stored Cross-Site Scripting (XSS) in TaskRunHandler.post() in web/handlers/task.py in QD 20220208 through 20250803. When a task is run via /task/<taskid>/run, the handler renders task log content (logtmp) into the HTML response using Python % string formatting without HTML encoding. logtmp is populated from the exception object or from new_env.variables.__log__, which is attacker-controlled via the template extract_variables mechanism. A low-privileged authenticated attacker can create a crafted HAR template that extracts arbitrary HTML/JavaScript into the __log__ variable via the api://util/unicode endpoint. When a victim triggers the task run, the embedded script executes in the victim browser within the QD application context.

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Mon, 31 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
Title Stored Cross‑Site Scripting via Task Run Logging in QD
Weaknesses CWE-79

Mon, 31 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
Description Stored Cross-Site Scripting (XSS) in TaskRunHandler.post() in web/handlers/task.py in QD 20220208 through 20250803. When a task is run via /task/<taskid>/run, the handler renders task log content (logtmp) into the HTML response using Python % string formatting without HTML encoding. logtmp is populated from the exception object or from new_env.variables.__log__, which is attacker-controlled via the template extract_variables mechanism. A low-privileged authenticated attacker can create a crafted HAR template that extracts arbitrary HTML/JavaScript into the __log__ variable via the api://util/unicode endpoint. When a victim triggers the task run, the embedded script executes in the victim browser within the QD application context.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-31T15:28:06.721Z

Reserved: 2026-06-07T00:00:00.000Z

Link: CVE-2026-51153

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-31T16:18:34.807

Modified: 2026-08-31T16:18:34.807

Link: CVE-2026-51153

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T16:30:05Z

Weaknesses