Description
Upsonic Cloudpickle Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Upsonic. Authentication is not required to exploit this vulnerability. The specific flaw exists within the add_tool endpoint, which listens on TCP port 7541 by default. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26845.
Exploits (1)
github
WORKING POC
1 stars
by exploitintel · pythonpoc
https://github.com/exploitintel/eip-pocs-and-cves/tree/main/CVE-2026-0773
Scores
CVSS v3
9.8
EPSS
0.0132
EPSS Percentile
79.7%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lab Environment
vulnerable
docker pull ghcr.io/exploitintel/cve-2026-0773-vulnerable:latest
Classification
CWE
CWE-502
Status
draft
Timeline
Published
Jan 23, 2026
Tracked Since
Feb 18, 2026