CVE-2026-86289

A vulnerability was found in Ollama up to 0.31.1. This issue affects the function readGGUFV1String of the file fs/ggml/gguf.go of the component GGUF Decoder. Performing a manipulation results in integer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 0.31.2-rc1 is capable of addressing this issue. The patch is named 67b6a1c2d45321e0cb3c04a18073f9818de7724b. It is recommended to upgrade the affected component.

CVSS v3 4.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/ollama/ollama/
https://github.com/ollama/ollama/commit/67b6a1c2d45321e0cb3c04a18073f9818de7724b
https://github.com/ollama/ollama/issues/17033
https://github.com/ollama/ollama/pull/17062
https://github.com/ollama/ollama/releases/tag/v0.31.2-rc1
https://vuldb.com/cve/CVE-2026-86289
https://vuldb.com/submit/906136
https://vuldb.com/vuln/399448
https://vuldb.com/vuln/399448/cti

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-07 09:17

Updated : 2026-09-11 21:17

NVD link : CVE-2026-86289

Mitre link : CVE-2026-86289

CVE.ORG link : CVE-2026-86289

JSON object : View

Products Affected

No product.

CWE

CWE-189

Numeric Errors

CWE-190

Integer Overflow or Wraparound

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