CVE-2026-73034 PoC — DB-GPT v0.8.1 Path Traversal Arbitrary File Write via user_id Header

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-73034.yaml

Associated Vulnerability

Title: DB-GPT v0.8.1 Path Traversal Arbitrary File Write via user_id Header (CVE-2026-73034)
Description:DB-GPT v0.8.1 contains an unauthenticated path traversal vulnerability that allows remote attackers to write arbitrary files to any location on the server by injecting directory traversal sequences into the user_id HTTP header of the Python file-upload endpoint. Attackers can send a crafted multipart upload request with a traversal-poisoned user_id header to escape the intended upload directory and write attacker-controlled content to locations such as Python startup hooks, cron directories, or agent scripts, resulting in remote code execution.

Description

DB-GPT through 0.8.1 allows unauthenticated arbitrary file writes via a path traversal in the user_id HTTP header of the POST /api/v1/python/file/upload endpoint, letting attackers escape the intended upload directory and write files anywhere, as confirmed by the reflected upload path in the JSON response.

File Snapshot

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