High severityNVD Advisory· Published May 16, 2025· Updated May 16, 2025

Improper Validation of Array Index in ollama/ollama

CVE-2025-1975

Description

A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by customizing the manifest content and spoofing a service. This is due to improper validation of array index access when downloading a model via the /api/pull endpoint, which can lead to a server crash.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
github.com/ollama/ollamaGo	<= 0.5.11	—

Affected products

osv-coords4 versions
pkg:apk/chainguard/k8sgpt pkg:apk/wolfi/k8sgpt pkg:golang/github.com/ollama/ollama pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed
< 0.4.28-r0+ 3 more
- (no CPE)range: < 0.4.28-r0
- (no CPE)range: < 0.4.28-r0
- (no CPE)range: <= 0.5.11
- (no CPE)range: < 0.0.20250523T151856-1.1
Ollama/Ollamacpe-rescue
Range: unspecified

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-wrh5-cmwx-q2qrghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-1975ghsaADVISORY
github.com/pypa/advisory-database/tree/main/vulns/ollama/PYSEC-2025-145.yamlghsaWEB
huntr.com/bounties/921ba5d4-f1d0-4c66-9764-4f72dffe7acdghsaWEB
pkg.go.dev/vuln/GO-2025-3695ghsaWEB

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cvss	0.455
epss	0.000
exploit	0.000
kev	0.000
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ransomware	0.000