Vulnerability · Published Jan 21, 2026 · Assigned by mitre
CVE-2025-66959
High 7.5
In plain English
A high-severity uncontrolled resource consumption in the ollama package (PyPI). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 5.3% (higher than 93% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)5.3%top 7.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | ollama | no fix listed | PYSEC-2026-101 |
Affected products (as reported)
Weakness: CWE-400, CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H