Server-Side Request Forgery Vulnerability in Ollama Software
CVE-2026-108836

6.9MEDIUM

Key Information:

Vendor

Ollama

Status
Ollama
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108836?

A security vulnerability has been identified in the Ollama software that affects versions up to 0.34.1. This issue lies within the IsValid function of the Pull API's model component. The vulnerability allows for remote exploitation through server-side request forgery, potentially impacting the integrity of the server and its interactions. Users are strongly advised to upgrade to version 0.34.2, which addresses this vulnerability with the appropriate patch. Protect your systems by staying informed and promptly updating your installations.

Affected Version(s)

Ollama 0.34.0

Ollama 0.34.1

Ollama 0.34.2

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-2026-108836 - Proof of Concept

References

https://vuldb.com/vuln/416610
vdb-entrytechnical-description
https://vuldb.com/vuln/416610/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-108836
third-party-advisory

CVSS V4

Score:
6.9
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

aLtEr (VulDB User)
.