{"id":"CVE-2026-86289","state":"PUBLISHED","title":"Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow","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.","publishedAt":"2026-09-07T08:45:15.290Z","updatedAt":"2026-09-11T20:35:22.078Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["n/a Ollama"],"affected":[{"vendor":"n/a","product":"Ollama","versions":[{"version":"0.31.0","status":"affected"},{"version":"0.31.1","status":"affected"},{"version":"0.31.2-rc1","status":"unaffected"}],"cpes":["cpe:2.3:a:ollama:ollama:*:*:*:*:*:*:*:*"],"modules":["GGUF Decoder"]}],"references":["https://vuldb.com/vuln/399448","https://vuldb.com/vuln/399448/cti","https://vuldb.com/cve/CVE-2026-86289","https://vuldb.com/submit/906136","https://github.com/ollama/ollama/issues/17033","https://github.com/ollama/ollama/pull/17062","https://github.com/ollama/ollama/commit/67b6a1c2d45321e0cb3c04a18073f9818de7724b","https://github.com/ollama/ollama/releases/tag/v0.31.2-rc1","https://github.com/ollama/ollama/"],"weaknesses":["CWE-190","CWE-189"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86289.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86289","state":"PUBLISHED","datePublished":"2026-09-07T08:45:15.290Z","dateUpdated":"2026-09-11T20:35:22.078Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-06T15:44:05.664Z"},"containers":{"cna":{"title":"Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"n/a","product":"Ollama","versions":[{"version":"0.31.0","status":"affected"},{"version":"0.31.1","status":"affected"},{"version":"0.31.2-rc1","status":"unaffected"}],"cpes":["cpe:2.3:a:ollama:ollama:*:*:*:*:*:*:*:*"],"modules":["GGUF Decoder"]}],"references":[{"url":"https://vuldb.com/vuln/399448","name":"VDB-399448 | Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/399448/cti","name":"VDB-399448 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-86289","name":"CVE-2026-86289 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/906136","name":"Submit #906136 | Ollama     <= 0.17.1 Integer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/ollama/ollama/issues/17033","tags":["exploit","issue-tracking"]},{"url":"https://github.com/ollama/ollama/pull/17062","tags":["issue-tracking","patch"]},{"url":"https://github.com/ollama/ollama/commit/67b6a1c2d45321e0cb3c04a18073f9818de7724b","tags":["patch"]},{"url":"https://github.com/ollama/ollama/releases/tag/v0.31.2-rc1","tags":["patch"]},{"url":"https://github.com/ollama/ollama/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":4.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":4.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","type":"CWE","lang":"en","description":"Integer Overflow"}]},{"descriptions":[{"cweId":"CWE-189","type":"CWE","lang":"en","description":"Numeric Error"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-07T08:45:15.290Z"},"timeline":[{"time":"2026-09-06T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-06T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-06T17:49:13.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"m00dy (VulDB User)","type":"reporter"}],"tags":["x_open-source"],"x_generator":["VulDB PVTS v202609"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-11T20:02:57.609369Z","id":"CVE-2026-86289","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-11T20:35:22.078Z"}}]}}}