CVE Explorer

CVE-2026-26220

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d1f623304299361c8fa84e36f20ffb7b7c9d6e43ccb2b27a4ec08d398b273a34

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unknown","packageName":"LightLLM","packageURL":"pkg:github/ModelTC/lightllm","product":"LightLLM","repo":"https://github.com/ModelTC/lightllm","vendor":"ModelTC","versions":[{"lessThanOrEqual":"1.1.0","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions

{"tags":["technical-description","exploit"],"url":"https://chocapikk.com/posts/2026/lightllm-pickle-rce/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/0

{"tags":["issue-tracking"],"url":"https://github.com/ModelTC/LightLLM/issues/1213"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/1

{"tags":["product"],"url":"https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/api_http.py#L310"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/3

{"tags":["product"],"url":"https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/api_http.py#L331"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/4

{"tags":["product"],"url":"https://lightllm-en.readthedocs.io/en/latest/index.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/2

{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/lightllm-pd-mode-unsafe-deserialization-rce"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3aaccdce09db6c26dbba73b5982b8eee7b87c1354b59a2505f2a8c44930f5292 · sha256:57dd3d49eb392221… · /containers/cna/references/5

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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