CVE-2026-94623

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Source

https://cve.org/CVERecord?id=CVE-2026-94623

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-94623.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-94623

Published

2026-09-21T22:04:12Z

Modified

2026-09-22T11:45:54Z

Severity

8.7 (High) CVSS_V4 - 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 CVSS Calculator

Summary

vLLM through 0.29.0 Denial of Service via NIXL Multi-Prompt Assertion Failure

Details

vLLM through 0.29.0 contains a denial of service vulnerability in the NIXL connector's prefix caching implementation that fails to properly validate block counts across multi-prompt completion requests in prefill/decode disaggregated deployments. Attackers can trigger an assertion failure in NixlBaseConnectorWorker._apply_prefix_caching by submitting completion requests with multiple prompts of varying lengths, causing the decode worker to terminate and become unavailable until restarted.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-617"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94623.json"
}

References

Affected packages

Git / github.com/vllm-project/vllm

Affected ranges

Type

GIT

Repo

https://github.com/vllm-project/vllm

Events

Introduced

Last Affected

98dff2a81d747d1dba01a47f939f48c3526d4206

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "0.29.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

Other

submission

v0.*

v0.1.0

v0.1.1

v0.1.2

v0.1.3

v0.1.4

v0.1.5

v0.1.6

v0.1.7

v0.10.0

v0.10.0rc1

v0.10.0rc2

v0.10.1rc1

v0.10.2rc1

v0.10.2rc2

v0.11.0rc1

v0.11.1

v0.11.1rc0

v0.11.1rc1

v0.11.1rc2

v0.11.1rc3

v0.11.1rc4

v0.11.1rc5

v0.11.1rc6

v0.13.0rc1

v0.14.0rc0

v0.14.0rc1

v0.15.0rc1

v0.15.2rc0

v0.16.0rc0

v0.16.0rc1

v0.17.0rc0

v0.17.1rc0

v0.17.2rc0

v0.18.0rc0

v0.18.1rc0

v0.18.2rc0

v0.19.1rc0

v0.19.2rc0

v0.2.0

v0.2.1

v0.2.2

v0.2.3

v0.2.4

v0.2.5

v0.2.6

v0.2.7

v0.20.1rc0

v0.20.2rc0

v0.21.1rc0

v0.22.1rc0

v0.23.1rc0

v0.25.0

v0.26.1rc0

v0.27.2rc0

v0.28.1rc0

v0.29.0

v0.29.0rc1

v0.29.0rc2

v0.29.0rc3

v0.29.0rc4

v0.29.0rc5

v0.29.0rc6

v0.3.0

v0.3.1

v0.3.2

v0.3.3

v0.4.0

v0.4.0.post1

v0.4.1

v0.4.2

v0.4.3

v0.5.0

v0.5.0.post1

v0.5.1

v0.5.2

v0.5.3

v0.5.3.post1

v0.5.4

v0.5.5

v0.6.0

v0.6.1

v0.6.1.post1

v0.6.1.post2

v0.6.2

v0.6.3

v0.6.3.post1

v0.6.4

v0.6.4.post1

v0.6.5

v0.6.6

v0.6.6.post1

v0.7.0

v0.7.1

v0.7.2

v0.7.3

v0.8.0rc1

v0.8.0rc2

v0.8.1

v0.8.2

v0.8.3rc1

v0.8.4

v0.9.0

v0.9.1

v0.9.1rc1

v0.9.1rc2

v0.9.2rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-94623.json"