CVE-2026-114050: vLLM before 0.31.0 Remote Engine Crash via Forged Multimodal UUID
Vulnerability summary
CVE-2026-114050 is a high (CVSS 7.5) vulnerability in vllm-project vllm. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.
Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 21-10-2026PublishedVulnerability first disclosed.
- 21-10-2026Last modifiedVulnerability information updated.
Description
vLLM before 0.31.0 uses a client-supplied multimodal uuid verbatim as cache identity with no consistency check on cache hits, allowing engine crashes. Unauthenticated attackers can desynchronize the P0/P1 processor caches to trigger a fatal token-placeholder mismatch, killing the entire serving instance until restarted.
CVSS metrics
6 scores · 4 sources · 2 versions- NVDNIST7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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
- OSV · ChainguardEcosystem advisory · calculated7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · PypiEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
10%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard4 products
- lmcache-cuda-12.8All versions (No fix recorded)
- py3.10-vllm-cuda-12.4All versions (No fix recorded)
- py3.12-vllm-cuda-12.4All versions (No fix recorded)
- vllm-omni-cuda-13.0All versions (No fix recorded) | < 0.32.0-r0
PyPI1 product
- vllm< 0.31.0
Vllm1 product
- vllm< 0.31.0
Vllm-project1 product
- vllm< 0.31.0
4 vendors · 7 products
References
9 links- www.vulncheck.com/advisories/vllm-before-0.31.0-remote-engine-crash-via-forged-multimodal-uuidThird Party AdvisoryWEBAdvisory
- github.com/vllm-project/vllmPACKAGE
