Vulnerability report

Exploitation attempts observed Confirmed confidence Not in CISA KEV

CVE-2024-3848

mlflow/mlflow Path Traversal

Mlflow/mlflow · affected before 2.12.1

Watch CVE-2024-3848 Browse KEV feed
Severity
CVSS 7.5 · High
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
43.3%
First observed
17 Sep 2026
Last observed
29 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-3848 is an unauthenticated vulnerability affecting mlflow/mlflow. A path traversal vulnerability exists in mlflow/mlflow version 2.11.0, identified as a bypass for the previously addressed CVE-2023-6909. The...

Have exploitation attempts been observed?

Yes. Previdian sensors have observed 14 exploitation attempts, 9 unique attacker IPs, and 8 countries targeting CVE-2024-3848. First observed Sep 17, 2026; last observed Oct 29, 2026. Confidence is confirmed.

Who is affected?

mlflow/mlflow affected before 2.12.1.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

mlflow/mlflow Path Traversal

A path traversal vulnerability exists in mlflow/mlflow version 2.11.0, identified as a bypass for the previously addressed CVE-2023-6909. The vulnerability arises from the application's handling of artifact URLs, where a '#' character can be used to insert a path into the fragment, effectively skipping validation. This allows an attacker to construct a URL that, when processed, ignores the protocol scheme and uses the provided path for filesystem access.

As a result, an attacker can read arbitrary files, including sensitive information such as SSH and cloud keys, by exploiting the way the application converts the URL into a filesystem path. The issue stems from insufficient validation of the fragment portion of the URL, leading to arbitrary file read through path traversal.

lfprojects Affected
mlflow
Before 2.12.1
mlflow Affected
mlflow/mlflow
Before 2.12.1
Published
16 May 2024
Exploitation Attempts Reported
17 Sep 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation attempts observed in the wild

Previdian

Recorded 17 Sep 2026

Previdian sensors observed exploitation attempts targeting this vulnerability.

Exploitation attempts observed

Previdian sensor

First observed 17 Sep 2026

Previdian sensors observed exploitation attempts targeting this vulnerability.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Previdian Sensors First 2026-10-27 20:53 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

Previdian Sensor Observations

Previdian sensor observations are exploitation attempts targeting this vulnerability. They do not show that the target was vulnerable or that the attempt succeeded. The cards and chart show volume, unique attackers, and daily activity.

14

Attempts observed

9

Unique attacker IPs

8

Attacker countries

CH · IE · JP · KZ · LT · RU · US · YE

9

Sensors observed

CVE-2024-3848 exploitation attempts over the last 44 days

Daily events observed by Previdian sensors

Updated 29 Oct 2026

0
1
1
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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1
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3
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16 Sep 25 Sep 4 Oct 13 Oct 29 Oct

First observed 17 Sep 2026 · Last observed 29 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
1
8
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-3848.yaml 25 Apr 2025

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.5 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

43.3%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22 Path Traversal: '\..\filename' CWE-29

All CVSS Scores

CVSS v3.1 7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.0 7.5 High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Mlflow < 2.11.0 - Path Traversal

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation attempts

  1. 20:59 UTC

    Virtual patch available

    Compensating WAF rule available to block exploitation

  2. 10:39 UTC

    Indicators of compromise added (6)

    Indicators of compromise recorded

  3. 17:37 UTC

    Observed by Previdian sensors

    Previdian sensors observed exploitation attempts targeting this vulnerability.

  4. 14:20 UTC

    Public PoC available

    Public proof-of-concept code published

  5. 00:00 UTC

    Nuclei template available

    Scanner coverage available

  6. 09:03 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 17:50 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2024-3848

Sample API response 
{
  "cve_id": "CVE-2024-3848",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.43284,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 14, "sensors": 9 }
}