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CVE-2026-65315

Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:52b762c7e1a867c2e80333340f7c447293bd928e5f5e9af52805303f5338740e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"Ollama","vendor":"Ollama","versions":[{"lessThanOrEqual":"f0078ae","status":"affected","version":"0","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-789","description":"Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Product","tags":["patch"],"url":"https://github.com/ollama/ollama"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/references/1
{"name":"GitHub Issue","url":"https://github.com/ollama/ollama/issues/17042"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ollama-remote-denial-of-service-via-attacker-controlled-allocation-in-gguf-metadata-parser"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:04317570e60f395bbf481055061b3c83ecf6e1b8c85b02f5100bccd2f3fae18b · sha256:9b9a63747b1be4d8… · /containers/cna/references/2

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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