What is CVE-2026-103041?

CVE-2026-103041 is a critical-severity vulnerability in Modeltc Lightllm, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-09-29.

How severe is CVE-2026-103041?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Modeltc Lightllm

CVE-2026-103041

LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.

Vulnerability class: Insecure Deserialization

Published 2026-09-29 · last modified 2026-09-29.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Modeltc Lightllm

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/ModelTC/LightLLM/issues/1596 (issue-tracking)
github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/embed_cache/manager.py (technical-description)
github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/embed_cache/manager.py (technical-description)
github.com/ModelTC/LightLLM (product)
www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code… (third-party-advisory)

Frequently asked questions

What is CVE-2026-103041?: CVE-2026-103041 is a critical-severity vulnerability in Modeltc Lightllm, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-09-29.
How severe is CVE-2026-103041?: Critical severity. CVSS v3 base score is 9.8 out of 10.