Deserialization in Kvcache-Ai Ktransformers
CVE-2026-26210
KTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming messages using pickle.loads() without validation. Attackers can send a crafted pickle payload to the exposed ZMQ socket to execute arbitrary code on the server with the privileges of the ktransformers process.
Vulnerability class: Insecure Deserialization
EPSS: 0.007 (50.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Kvcache-ai Ktransformers — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, technical-description, Third Party Advisory, exploit, Mitigation)
- disclosure@vulncheck.com (issue-tracking, Patch, patch, Issue Tracking)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-26210?
- CVE-2026-26210 is a critical-severity vulnerability in Kvcache-Ai Ktransformers, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-04-23.
- How severe is CVE-2026-26210?
- Critical severity. CVSS v3 base score is 9.8 out of 10.