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Public proof of conceptFix available

CVE-2025-8406

A public proof of concept exists; no exploitation attested.

  • Published2025-10-05
  • Fixed in0.84.2
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2025-10-0509:15CVE publishedNVD

Versions per branch

NVD · OSV
Zenml
BranchAffectedFixed in
0.x≥ 0.83.1, < 0.84.20.84.2
0.x≥ 0.81.0, < 0.84.20.84.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As @huntr_ai, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • zenml-io/zenml
    Affected
    • < 0.84.2fixed in 0.84.2custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-10-05

Fix

  1. Update Zenml to 0.84.2

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2025-10-06
  • NVDCVSS 3.17.8read 2026-10-23
  • CNACVSS 3.06.3known since 2026-10-23
  • CNAweakness (CWE)CWE-22known since 2026-10-23
  • FIRST EPSSEPSS score0.4 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2025-10-07

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2025-10-05
Last Modified
2026-10-19
NVD status
Analyzed
GitHub Advisory
GHSA-q92x-2x5g-h365

Frequently asked questions

What is 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.

Is CVE-2025-8406 actively exploited?

A proof-of-concept exploit exists for CVE-2025-8406, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-8406?

CVE-2025-8406 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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