CVE-2026-5530

MEDIUM

Ollama Model Pull API download.go server-side request forgery

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2026-5530. PoCs published by adminlove520, davidrxchester.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2026-5530, an SSRF vulnerability in Ollama that allows full response exfiltration via OCI registry redirect. The PoC includes three modes: enumeration, exfiltration, and probing for response size.

Description

A flaw has been found in Ollama up to 18.1. This issue affects some unknown processing of the file server/download.go of the component Model Pull API. Executing a manipulation can lead to server-side request forgery. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Exploits (2)

github WORKING POC 3 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2026/CVE-2026-5530

This repository contains a functional exploit for CVE-2026-5530, an SSRF vulnerability in Ollama that allows full response exfiltration via OCI registry redirect. The PoC includes three modes: enumeration, exfiltration, and probing for response size.

Classification
Working Poc 95%
Attack Type
Ssrf
Complexity
Moderate
Reliability
Reliable
Target: Ollama
No auth needed
Prerequisites: attacker-controlled registry host reachable by Ollama · knowledge of internal endpoints or response size for exfiltration
devstral-2 · analyzed May 05, 2026 Full analysis →
nomisec WORKING POC
by davidrxchester · poc
https://github.com/davidrxchester/CVE-2026-5530

This repository contains a functional exploit for CVE-2026-5530, an SSRF vulnerability in Ollama that allows response exfiltration via OCI registry redirect. The PoC includes three modes: enumeration, exfiltration, and probing for response size.

Classification
Working Poc 95%
Attack Type
Ssrf
Complexity
Moderate
Reliability
Reliable
Target: Ollama (version not specified)
No auth needed
Prerequisites: attacker-controlled registry host reachable by Ollama · knowledge of internal endpoints or response size for exfiltration
devstral-2 · analyzed Apr 10, 2026 Full analysis →

References (3)

Core 3
Core References
Vdb Entry vdb-entry
VDB-355283 | Ollama Model Pull API download.go server-side request forgery
https://vuldb.com/vuln/355283
Signature, Permissions Required signature permissions-required
VDB-355283 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/355283/cti
Third Party Advisory third-party-advisory
Submit #782107 | Ollama 18.1 and previous Server-Side Request Forgery
https://vuldb.com/submit/782107

Scores

CVSS v3 6.3
EPSS 0.0029
EPSS Percentile 20.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
None/Ollama 18.0
None/Ollama 18.1
Published Apr 05, 2026
Tracked Since Apr 05, 2026