CVE-2026-58166 (GCVE-0-2026-58166)
Vulnerability from cvelistv5 – Published: 2026-06-30 15:51 – Updated: 2026-07-14 21:34 X_Open Source
VLAI
EPSS
VEX
Title
OpenBMB ChatDev - Unauthenticated Path Traversal in Upload Handler Allows Arbitrary File Write and Delete
Summary
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.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 15:00 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/OpenBMB/ChatDev/issues/638 | technical-descriptionexploit |
| https://github.com/OpenBMB/ChatDev/pull/641 | issue-tracking |
| https://github.com/OpenBMB/ChatDev/commit/4fd4da6… | patch |
| https://www.vulncheck.com/advisories/openbmb-chat… | third-party-advisory |
Impacted products
Date Public
2026-06-29 00:00
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