Vulnerability record/PUBLISHED/Published Oct 25, 2026 13:20:14 UTC
CVE-2026-116173
vLLM from 0.22.0 before 0.24.0 contains a denial of service vulnerability that allows remote attackers to terminate EngineCore by bypassing logprob_token_ids limits in the Rust gRPC frontend. Attackers can send Generate or GenerateStream requests with output_logprobs enabled and more than 128 output_candidates.token_ids, triggering a fatal sampler exception that crashes the engine.
Base score8.2/ 10
SeverityHighCVSS 4.0
Exploitability / impact
CVSS metric breakdown
Base severityHigh
Attack vectorNetworkAV
Attack complexityHighAC
Attack requirementsPresentAT
Privileges requiredNonePR
User interactionNoneUI
Vulnerable system confidentialityNoneVC
Vulnerable system integrityNoneVI
Vulnerable system availabilityHighVA
Subsequent system confidentialityNoneSC
Subsequent system integrityNoneSI
Subsequent system availabilityNoneSA
CVSS vector string
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering AuthorityVulnCheck
Last updatedOct 26, 2026 19:48:36 UTC
PublishedOct 25, 2026 13:20:14 UTC
ReservedOct 25, 2026 12:25:26 UTC
Credits
- rexpository
- jperezdealgaba