Cloudanix VulnDB

CVE-2026-58166

Critical · 9.1

CVSS

9.1

EPSS

0.9%

Published

Jun 30, 2026

CISA due date

—

The record

OpenBMB ChatDev through 2.2.0, fixed in commit 4fd4da6, contains a path traversal vulnerability that allows unauthenticated remote attackers to write or delete arbitrary files by supplying a malicious multipart filename in the file upload endpoint. Attackers can send a crafted filename containing path traversal sequences or an absolute path to the POST uploads session endpoint, which constructs the destination path without sanitization in save_upload_file, causing file write and cleanup operations to target attacker-chosen paths on the server filesystem.

Affected packages

Ecosystem Package Introduced Fixed

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