Ollama Platform has missing authentication enabling attackers to perform model management operations

CRITICAL 9.8CVE-2025-63389 · GHSA-f6mr-38g8-39rg · GO-2025-4251 · Published 18/12/2025 · updated 13/10/2026

Package	Affected versions	Patched versions
github.com/ollama/ollama Go	`≤ 0.13.5all versions`	No fix yet
ollama ollama	`≤ 0.12.3`	No fix yet

Description

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.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2025-63389 · ADVISORY
gist.github.com/Cristliu/48dae561696374744d9fced07a544ecd · WEB
ollama/ollama · PACKAGE
ollama/ollama · WEB
gist.github.com/Cristliu/b6f4d070fb27932f581be1aadc0923e7
GitHub Advisory GHSA-f6mr-38g8-39rg · ADVISORY

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