Path Traversal leading to Remote Code Execution in Ollama
Ollama is vulnerable to path traversal in the `/api/pull` endpoint due to insufficient validation of layer digests by the `digestToPath` function. An unauthenticated remote attacker can specify a path traversal sequence as a layer digest, causing a malicious binary to be written outside the model store. Critically if the server process has write access to `/usr/lib/ollama` (the default in most Ollama Docker images), an attacker can write the malicious file to that directory. On the next server restart, the file is loaded and executed, resulting in remote code execution as root. This issue was fixed in version 0.35.0.
CVE-2026-103663
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103663
Ollama
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/ollama/ollama",
"vendor": "Ollama",
"product": "Ollama",
"versions": [
{
"status": "affected",
"version": "0.34.2",
"lessThan": "0.35.0",
"versionType": "semver"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-103663
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #12495 · Revision 1
- Added to Heist Feed
- Publisher date