CVE-2026-86289 — Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow
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 manipu…
Published: 2026-09-07 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7