CVE Explorer

CVE-2025-62426

vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the /v1/chat/completions and /tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chat_template_kwargs parameters, it is possible to block processing of the API server for long periods of time, delaying all other requests. This issue has been patched in version 0.11.1.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fe7b242b868e4dd19d43721f153655063eac414590fc8f1ece0a56baf0783905

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"vllm","vendor":"vllm-project","versions":[{"status":"affected","version":">= 0.5.5, < 0.11.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"name":"https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/chat_utils.py#L1602-L1610","tags":["x_refsource_MISC"],"url":"https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/chat_utils.py#L1602-L1610"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/references/3

{"name":"https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/openai/serving_engine.py#L809-L814","tags":["x_refsource_MISC"],"url":"https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/openai/serving_engine.py#L809-L814"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/references/4

{"name":"https://github.com/vllm-project/vllm/commit/3ada34f9cb4d1af763fdfa3b481862a93eb6bd2b","tags":["x_refsource_MISC"],"url":"https://github.com/vllm-project/vllm/commit/3ada34f9cb4d1af763fdfa3b481862a93eb6bd2b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/references/2

{"name":"https://github.com/vllm-project/vllm/pull/27205","tags":["x_refsource_MISC"],"url":"https://github.com/vllm-project/vllm/pull/27205"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/references/1

{"name":"https://github.com/vllm-project/vllm/security/advisories/GHSA-69j4-grxj-j64p","tags":["x_refsource_CONFIRM"],"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-69j4-grxj-j64p"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5ebce62cc378d8fe675388f82661721ce2b7781a0b2203deab97429c454655c2 · sha256:2faf7dbf0ff69727… · /containers/cna/references/0

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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