CVE-2026-58166

CRITICAL SEVERITY

CVSS Score & Metrics

Base Score

9.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

June 30, 2026

Last Modified

June 30, 2026

CWE ID

CWE-22

Source

NVD

Vendor

OpenBMB

Product

ChatDev

External References

https://github.com/OpenBMB/ChatDev/commit/4fd4da603801766b14ad8788649cfc1ad21f99a6
https://github.com/OpenBMB/ChatDev/issues/638
https://github.com/OpenBMB/ChatDev/pull/641
https://www.vulncheck.com/advisories/openbmb-chatdev-unauthenticated-path-traversal-in-upload-handler-allows-arbitrary-file-write-and-delete

CVE-2026-58166

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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