CVE-2026-5530
Description
A flaw was found in Ollama. A remote attacker can exploit this vulnerability by manipulating the Model Pull API's server/download.go file. This can lead to Server-Side Request Forgery (SSRF), allowing the attacker to force the server to make requests to arbitrary network locations.
Statement
Moderate. A Server-Side Request Forgery (SSRF) flaw in Ollama's Model Pull API allows a remote attacker to manipulate the API, compelling the server to initiate requests to arbitrary network locations. This could facilitate unauthorized access to internal network resources or enable other network-based attacks.
Mitigation
To reduce exposure, restrict network access to the Ollama service. Configure firewall rules to limit inbound connections to the port used by Ollama (e.g., 11434) to only trusted clients or networks. This can prevent remote attackers from exploiting the Server-Side Request Forgery vulnerability. Applying firewall rules may require a service reload or restart to take effect and could impact legitimate service functionality if not configured carefully.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.3 | N/A | 6.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/RC:R
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Access Control
Technical Impact: Bypass Protection Mechanism
By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
Frequently Asked Questions
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