Server-side request forgery in Ollama Pull API name validation
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Ollama from 0.34.0 before 0.34.2 is affected. A flaw in the IsValid function of the Pull API model name handling (CWE-918) enables server-side request forgery. A remote attacker without privileges or user interaction can make the server issue unintended requests. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
A vulnerability has been found in Ollama up to 0.34.1. The affected element is the function IsValid of the file types/model/name.go of the component Pull API. The manipulation leads to server-side request forgery. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.34.2 is sufficient to fix this issue. The identifier of the patch is dfabde4539e42ba1e1eab50a3a50b88aea7958a0. It is suggested to upgrade the affected component.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Ollama | 0.34.0; 0.34.1 | 0.34.2 | Patch available | CNA |
- Ollama Vendor— Affected 0.34.0; 0.34.1 Fixed in 0.34.2 Patch available CNA
Remediation
Upgrade Ollama to version 0.34.2, which contains patch dfabde4539e42ba1e1eab50a3a50b88aea7958a0.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Ollama Fixed in 0.34.2
Vendor assessments
Timeline
- 2026-10-12 Threatist record created from CVE-2026-108836
- 2026-10-12 Alias added: GHSA-fr42-jr2w-mx59
- 2026-10-13 Affected versions changed · Red Hat
- 2026-10-13 CVSS score added · Red Hat
- 2026-10-13 Priority changed: MEDIUM → LOW
- 2026-10-13 CISA SSVC decision points changed
References
Patch 3
Sources
- CVE-2026-108836 · CVE Program
- CVE-2026-108836 · NVD
- FIRST EPSS
- GHSA-fr42-jr2w-mx59 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-108836 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences