CVE-2026-51153
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.
- Score
- CVSS 3.1 5.4 Medium
- Status
- Deferred - cve@mitre.org
- Published
- 2026-08-31
- Last modified
- 2026-09-01
- Weaknesses
- CWE-79
References
- https://gist.github.com/kurokoleung/9fc51b02c85c2f466bf4ea72c62ba343
- https://qd-today.github.io/qd/
