Path Traversal in Zenml
CVE-2025-8406
ZenML version 0.83.1 is affected by a path traversal vulnerability in the `PathMaterializer` class. The `load` function uses `is_path_within_directory` to validate files during `data.tar.gz` extraction, which fails to effectively detect symbolic and hard links. This vulnerability can lead to arbitrary file writes, potentially resulting in arbitrary command execution if critical files are overwritten.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Zenml
- Zenml-Io Zenml-Io/zenml — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- huntr.com/bounties/a0880d64-9928-45bf-9663-2cd81582d9e7 (Exploit, Third Party Advisory)
- github.com/zenml-io/zenml/commit/5d22a48d7bf6c7f10b748577c2be79cc7969d398 (Patch)
Frequently asked questions
- What is CVE-2025-8406?
- CVE-2025-8406 is a high-severity vulnerability in Zenml, classified under Path Traversal. CVSS score: 7.8/10. Published 2025-10-05.
- How severe is CVE-2025-8406?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-8406 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.