4.3Medium
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.
What this means for your business
- An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
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Scoring
- CVSS
- 4.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L- CVSS v4
- 2.1
- Weakness
- CWE-189
- Assigned by
- cna@vuldb.com
Dates
- Published
- 2026-09-07
- Last modified
- 2026-09-11
- Sources
- NVD
References
- 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