boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-86289

n/a Ollama — Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow
  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   P   N   N   L    2.1   .0069   51.1     —
AFFECTED
  Product  Versions  Fixed
  Ollama   0.31.0 –  0.31.2-rc1
TIMELINE
  Sep 6   Reserved by VulDB
  Sep 7   Published (CNA: VulDB)
  Sep 11  EXPLOIT PUBLISHED — CVE-2026-86289 (Ollama). Public exploit reference added.
CWE-189, CWE-190 · CNA: VulDB · CVSS v4.0 · 9 references · NVD status: Deferred

Description

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.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
September 6, 2026ReservedReserved by VulDB
September 7, 2026PublishedPublished (CNA: VulDB)
September 11, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-86289 (Ollama). Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
n/aOllama—0.31.00.31.2-rc1

Weaknesses

CWE-189 · CWE-190

References (9)

Related

Authoritative record: CVE-2026-86289 at cve.org

Weaknesses: CWE-189 · CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-86289 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.