CVE-2026-7482

Ollama before 0.17.1 contains a heap out-of-bounds read vulnerability in the GGUF model loader. The /api/create endpoint accepts an attacker-supplied GGUF file in which the declared tensor offset and size exceed the file's actual length; during quantization in fs/ggml/gguf.go and server/quantization.go (WriteTo()), the server reads past the allocated heap buffer. The leaked memory contents may include environment variables, API keys, system prompts, and concurrent users' conversation data, and can be exfiltrated by uploading the resulting model artifact through the /api/push endpoint to an attacker-controlled registry. The /api/create and /api/push endpoints have no authentication in the upstream distribution. Default deployments bind to 127.0.0.1, but the documented OLLAMA_HOST=0.0.0.0 configuration is widely used in practice (large public-internet exposure observed).

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ollama/ollama/commit/88d57d0483cca907e0b23a968c83627a20b21047	Patch
https://github.com/ollama/ollama/pull/14406	Issue Tracking Patch
https://github.com/ollama/ollama/releases/tag/v0.17.1	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:ollama:ollama:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-04 13:16

Updated : 2026-06-17 11:02

NVD link : CVE-2026-7482

Mitre link : CVE-2026-7482

CVE.ORG link : CVE-2026-7482

JSON object : View

Products Affected

ollama

ollama

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2026-7482", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7482", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-04T13:48:32.181054Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "abd028dc-c042-4c4d-9749-38d0f850af89", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "abd028dc-c042-4c4d-9749-38d0f850af89", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "AUTOMATIC", "baseScore": 8.8, "Automatable": "YES", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "DIFFUSE", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:D/RE:L/U:Red", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "RED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "LOW", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "abd028dc-c042-4c4d-9749-38d0f850af89", "affectedData": [{"repo": "https://github.com/ollama/ollama", "vendor": "ollama", "product": "ollama", "versions": [{"status": "affected", "version": "0", "lessThan": "0.17.1", "versionType": "semver"}], "packageName": "ollama/ollama", "programFiles": ["fs/ggml/gguf.go", "server/quantization.go"], "collectionURL": "https://github.com", "defaultStatus": "unaffected"}]}], "published": "2026-05-04T13:16:01.727", "references": [{"url": "https://github.com/ollama/ollama/commit/88d57d0483cca907e0b23a968c83627a20b21047", "tags": ["Patch"], "source": "abd028dc-c042-4c4d-9749-38d0f850af89"}, {"url": "https://github.com/ollama/ollama/pull/14406", "tags": ["Issue Tracking", "Patch"], "source": "abd028dc-c042-4c4d-9749-38d0f850af89"}, {"url": "https://github.com/ollama/ollama/releases/tag/v0.17.1", "tags": ["Release Notes"], "source": "abd028dc-c042-4c4d-9749-38d0f850af89"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "abd028dc-c042-4c4d-9749-38d0f850af89", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "Ollama before 0.17.1 contains a heap out-of-bounds read vulnerability in the GGUF model loader. The /api/create endpoint accepts an attacker-supplied GGUF file in which the declared tensor offset and size exceed the file's actual length; during quantization in fs/ggml/gguf.go and server/quantization.go (WriteTo()), the server reads past the allocated heap buffer. The leaked memory contents may include environment variables, API keys, system prompts, and concurrent users' conversation data, and can be exfiltrated by uploading the resulting model artifact through the /api/push endpoint to an attacker-controlled registry. The /api/create and /api/push endpoints have no authentication in the upstream distribution. Default deployments bind to 127.0.0.1, but the documented OLLAMA_HOST=0.0.0.0 configuration is widely used in practice (large public-internet exposure observed)."}], "lastModified": "2026-06-17T11:02:30.040", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ollama:ollama:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18CE34C3-1F67-46CE-8B8D-5B54FC3996EF", "versionEndExcluding": "0.17.1"}], "operator": "OR"}]}], "sourceIdentifier": "abd028dc-c042-4c4d-9749-38d0f850af89"}