6.5

CVE-2026-105756: vllm-project vllm Improper Input Validation

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-2823-qmq8-rwvjCGA-537r-767h-m8x2CGA-684j-4gwh-x66r
Published 05-10-2026Last modified 06-10-2026
Open JSON

Vulnerability summary

CVE-2026-105756 is a medium (CVSS 6.5) Improper Input Validation vulnerability in vllm-project vllm. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.9% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-10-2026
    PublishedVulnerability first disclosed.
  2. 06-10-2026
    Last modifiedVulnerability information updated.

Description

vLLM is an inference and serving engine for large language models. Prior to 0.30.0, OpenAI-compatible request models accept a non-empty cache_salt value without enforcing the character and length restrictions required by the IPCCacheServerKey consumer in LMCache-MP. On deployments using the LMCache-MP connector, a salt that contains a forbidden character or exceeds the permitted length can raise an uncaught ValueError during scheduler cache lookup, causing EngineCore to terminate and denying service to all concurrent users. This issue is fixed in version 0.30.0.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard8 products
  • kserve-huggingfaceserver-cuda-13.3All versions (No fix recorded)
  • lmcache-cuda-12.8All versions (No fix recorded)
  • nemo-rl-cuda-13.0-vllmAll versions (No fix recorded)
  • py3.10-vllm-cuda-12.4All versions (No fix recorded)
  • py3.12-vllm-cuda-12.4All versions (No fix recorded)
PyPI1 product
  • vllm< 0.30.0
Vllm1 product
Vllm-project1 product

4 vendors · 11 products

References

9 links