Server-Side Request Forgery in Ollama Model Pull API
CVE-2026-5530

5.3MEDIUM

Key Information:

Vendor

Ollama

Status
Ollama
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5530?

A vulnerability exists in the Ollama product affecting the Model Pull API, specifically within the file server/download.go. This flaw allows an attacker to manipulate requests that can lead to server-side request forgery (SSRF) attacks. Such an attack can be executed remotely, posing significant risks, as it can enable unauthorized access to internal services or resources that are otherwise protected from external access. The vendor was notified of this issue prior to public disclosure but has not responded to the communication.

Affected Version(s)

Ollama 18.0

Ollama 18.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5530
Created by davidrxchester

References

https://vuldb.com/vuln/355283
vdb-entry
https://vuldb.com/vuln/355283/cti
signaturepermissions-required
https://vuldb.com/submit/782107
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

davidrochester (VulDB User)
VulDB CNA Team
.