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VulnerabilityPublished

CVE-2026-94622: vllm · Uncaught Exception

Affects vllmSource CVE Database V5

0
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Not known to be exploited · CVSS 8.7 High.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
vllm-projectvllmAffected
  • <=0.29.0
Fixed in–
GitHubvllm-project/vllmpkg:github/vllm-project/vllmOther threatsAffected
  • <=0.29.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, operators should monitor for malformed requests with incomplete kv_transfer_params and consider implementing request validation or filtering to prevent triggering the uncaught exception.

Description

vLLM versions up to 0.29.0 have a denial of service vulnerability caused by an uncaught KeyError in the NIXL connector's metadata handling. This occurs when requests contain incomplete kv_transfer_params dictionary entries, leading to termination of the decode engine and failure of all routed requests until manually restarted.

References

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