---
title: "CVE-2025-63389: Ollama Platform has missing authentication enabling attackers to perform model management operations"
url: https://erroneo.us/security/cve/CVE-2025-63389/
description: "CVE-2025-63389 (github.com/ollama/ollama (Go)): A critical authentication bypass vulnerability exists in Ollama platform's API endpoints in versions prior…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-18
date_modified: 2026-01-22
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-63389"
kev: false
cvss: 9.3
epss: 0.00708
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-63389: Ollama Platform has missing authentication enabling attackers to perform model management operations

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.7% , percentile 53: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 53% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes github.com/ollama/ollama (Go) <= 0.13.5, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

A critical authentication bypass vulnerability exists in Ollama platform's API endpoints in versions prior to and including v0.12.3. The platform exposes multiple API endpoints without requiring authentication, enabling remote attackers to perform unauthorized model management operations.

## Affected packages

- Go `github.com/ollama/ollama` <= 0.13.5 → fixed: none listed

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.71% probability of exploitation activity in the next 30 days; percentile 53.

## Sources

- [GitHub Advisory GHSA-f6mr-38g8-39rg](https://github.com/advisories/GHSA-f6mr-38g8-39rg)
- [CVE.org record CVE-2025-63389](https://www.cve.org/CVERecord?id=CVE-2025-63389)
- [NVD entry CVE-2025-63389](https://nvd.nist.gov/vuln/detail/CVE-2025-63389)
- [github.com](https://github.com/ollama/ollama/issues)
- [gist.github.com](https://gist.github.com/Cristliu/48dae561696374744d9fced07a544ecd)
- [gist.github.com](https://gist.github.com/Cristliu/b6f4d070fb27932f581be1aadc0923e7)

---
Source page: https://erroneo.us/security/cve/CVE-2025-63389/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt