CVE-2026-26220

CVE Enrichment

CVSS: 9.3 CRITICAL
EPSS: 1.66%
EPSS Percentile: 76.04%
CISA KEV: Not listed

Description

LightLLM version 1.1.0 and prior contain an unauthenticated remote code execution vulnerability in PD (prefill-decode) disaggregation mode. The PD master node exposes WebSocket endpoints that receive binary frames and pass the data directly to pickle.loads() without authentication or validation. A remote attacker who can reach the PD master can send a crafted payload to achieve arbitrary code execution.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: disclosure@vulncheck.com
Published: 17-Feb-2026 10:16
Last Modified: 14-Jul-2026 23:16
EPSS Date: 2026-10-11
CWE: CWE-502

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:N /
                            PR:N /
                            UI:N /
                            VC:H /
                            VI:H /
                            VA:H /
                            SC:N /
                            SI:N /
                            SA:N /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

References

Last enrichment sync: 12-Oct-2026 09:24
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

LightLLM PD-mode unsafe deserialization, CVE-2026-26220, covers unauthenticated binary WebSocket data passed to pickle.loads() in versions through 1.1.0. N4D Linux Malware Abuses MCP Tools and Scans for Exposed Services

CVE (4)

Malware (2)

People (1)

MITRE ATT&CK (11)

Products (22)

Tools (7)

Industries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.