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CVE-2026-9540

A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:232f222f55bae476731b56e29ebc203bf89c1ae124b81e1ff70c25d0863cbe87
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:vllm-project:vllm:*:*:*:*:*:*:*:*"],"modules":["OpenAI-compatible Serving Path"],"product":"vllm","vendor":"vllm-project","versions":[{"status":"affected","version":"0.19.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"tags":["product"],"url":"https://github.com/vllm-project/vllm/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/6
{"tags":["exploit","issue-tracking"],"url":"https://github.com/vllm-project/vllm/issues/37343"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/3
{"tags":["issue-tracking","patch"],"url":"https://github.com/vllm-project/vllm/pull/37594"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/4
{"tags":["related"],"url":"https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/5
{"name":"Submit #814645 | vllm-project vllm 0.19.0 Denial of Service","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/814645"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/2
{"name":"VDB-365601 | vllm-project vllm OpenAI-compatible Serving Path denial of service","tags":["vdb-entry"],"url":"https://vuldb.com/vuln/365601"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/0
{"name":"VDB-365601 | CTI Indicators (IOB, IOC, TTP)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/365601/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e63958c73f02e4bfc0e8a0e370aaac10bc38ea29c5c8ea97ccb6e3b3099d53ab · sha256:8c89dd924f803f97… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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