CVE-2026-7482: Github.com/ollama/ollama Ollama Contains A Heap Out-of-bounds Vulnerability

HIGH
Advisory Identifier: GHSA-x8qc-fggm-mpqg
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CVSS 9.1
CWE-125
Published
Advisory Summary

CVE-2026-7482 is a HIGH (CVSS 9.1) ollama contains a heap out-of-bounds vulnerability (CWE-125: Out-of-bounds Read) affecting Github.com/ollama/ollama libraries in the Go ecosystem. The issue involves ollama contains a heap out-of-bounds read vulnerability in the gguf model loader. Remediation is available by upgrading affected packages to version 0.17.1.

CVE-2026-7482 at a Glance

CVE Identifier CVE-2026-7482
GHSA Identifier GHSA-x8qc-fggm-mpqg
Severity HIGH
CVSS v3.1 Base Score 9.1
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Github.com/ollama/ollama
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-7482

To remediate this vulnerability, upgrade all affected Github.com/ollama/ollama dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/ollama/ollama fixed: 0.17.1 
Upgrade github.com/ollama/ollama to 0.17.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/ollama/ollama

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-7482, inspect your project dependencies for Github.com/ollama/ollama:

inspect dependencies for github.com/ollama/ollama

Analyze the terminal output to locate any version of Github.com/ollama/ollama in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.17.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Github.com/ollama/ollama, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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).

CVE-2026-7482 Affected Github.com/ollama/ollama Versions

1 component(s)
Fixed Versions:
0.17.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/ollama/ollama
golang/github.com/ollama/ollama
Go
< 0.17.1
0.17.1

References

NVD — CVE-2026-7482 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7482
Github.com/ollama/ollama Source Repository REPOSITORY
https://github.com/ollama/ollama/pull/14406
Security Fix Commit FIX COMMIT
https://github.com/ollama/ollama/commit/88d57d0483cca907e0b23a968c83627a20b21047
Github.com/ollama/ollama Source Repository REPOSITORY
https://github.com/ollama/ollama
Github.com/ollama/ollama Release RELEASE
https://github.com/ollama/ollama/releases/tag/v0.17.1

Frequently Asked Questions

What is CVE-2026-7482?
CVE-2026-7482 is a security vulnerability in Github.com/ollama/ollama involving Ollama contains a heap out-of-bounds read vulnerability in the GGUF model loader under CWE-125: Out-of-bounds Read.
Which Github.com/ollama/ollama versions are affected?
Affected versions include releases prior to 0.17.1 across affected packages: github.com/ollama/ollama.
What version fixes CVE-2026-7482?
Upgrading to 0.17.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/ollama/ollama affected?
Yes, github.com/ollama/ollama is affected in releases prior to 0.17.1. Upgrade your dependency to 0.17.1 or later.
What is the CVSS score of CVE-2026-7482?
CVE-2026-7482 has a CVSS v3.1 base score of 9.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-7482?
CVE-2026-7482 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Go dependencies for CVE-2026-7482?
Run the dependency tree command: 'inspect dependencies for github.com/ollama/ollama'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-x8qc-fggm-mpqg",
  "modified" : "2026-05-08T17:26:00Z",
  "published" : "2026-05-04T15:31:14Z",
  "aliases" : [ "CVE-2026-7482" ],
  "summary" : "Ollama contains a heap out-of-bounds read vulnerability in the GGUF model loader",
  "details" : "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).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "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/AU:Y/R:A/V:D/RE:L/U:Red"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ollama/ollama"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.17.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-7482"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ollama/ollama/pull/14406"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ollama/ollama/commit/88d57d0483cca907e0b23a968c83627a20b21047"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ollama/ollama"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ollama/ollama/releases/tag/v0.17.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-08T17:26:00Z",
    "nvd_published_at" : "2026-05-04T13:16:01Z"
  }
}