LMDeploy 0.9.0 through 0.18.0 Unauthenticated RCE via /update_weights Pickle Deserialization
Impact
InternLM LMDeploy 0.9.0 through 0.18.0 contains an unauthenticated remote code execution vulnerability that allows remote attackers to run OS commands by sending pickled data to the /update_weights endpoint. Attackers can submit a base64-encoded crafted pickle in serialized_named_tensors, which ForkingPickler.loads deserializes without validation, executing commands as the api_server process.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
InternLM · VulnCheck
lmdeploy
1 range
InternLM · VulnCheck
lmdeploy
Package identity
pkg:pypi/lmdeployExplore lmdeploy →Identity supplied by VulnCheck. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
0.9.0 → through 0.18.0
semver versions
Other versions: unaffected
Original source description
InternLM LMDeploy 0.9.0 through 0.18.0 contains an unauthenticated remote code execution vulnerability that allows remote attackers to run OS commands by sending pickled data to the /update_weights endpoint. Attackers can submit a base64-encoded crafted pickle in serialized_named_tensors, which ForkingPickler.loads deserializes without validation, executing commands as the api_server process.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-119706View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Environment requirements
These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.
VulnCheck · platform conditions
Any condition may hold
Vulnerable product
cpe:2.3:a:internlm:lmdeploy:*:*:*:*:*:*:*:*From (inclusive): 0.9.0
Through (inclusive): 0.18.0
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:internlm:lmdeploy:*:*:*:*:*:*:*:*",
"versionStartIncluding": "0.9.0",
"versionEndIncluding": "0.18.0"
}
]
}
]
}
]Contributing organizations · 2
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.