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Noroxi
CVE-2023-6977· NVD / CVE Program· CNA @huntr_ai

Path Traversal: '\..\filename'

Noroxi assessment

Priority: Monitor (action score 31/100)

  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 3.9% (FIRST EPSS); higher than 90.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: mlflow (PyPI) 2.9.2.
  • Severity is disputed: the assigning authority (CNA) scores it 10.0, NVD 7.5.

Low priority for now. Upgrade to mlflow (PyPI) 2.9.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

This vulnerability enables malicious users to read sensitive files on the server.

HighCVSS 7.5 · v3.1—Proof of concept Fix available
Published
Dec 20, 2023
Updated
Jun 17, 2026
EPSS
3.9% · 90th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.9%

CNA vs NVD score

NVD
7.5
CNA · @huntr_ai
10.0
2.5 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-6977

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
lfprojectsmlflow

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • lfprojects mlflow1.0.0 and later · before 2.9.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (@huntr_ai). Independent of NVD's CPE analysis and usually ahead of it.

  • mlflow mlflow/mlflow

    • unspecified and later · before 2.9.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
PyPImlflowbefore 2.9.22.9.2

Same product

lfprojects: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-64849MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypassed via unvalidated HTTP redirects (and DNS rebinding)KEV
    70This week
  • CVE-2023-3765Absolute Path Traversal in mlflow/mlflow
    60This week
  • CVE-2023-1177Path Traversal: '\..\filename' in mlflow/mlflow
    60This week
  • CVE-2023-6909Path Traversal: '\..\filename' in mlflow/mlflow
    57Plan
  • CVE-2023-6018MLflow Arbitrary File Write
    53Plan
  • CVE-2025-11201MLflow Tracking Server Model Creation Directory Traversal Remote Code Execution Vulnerability
    47Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
PyPI:mlflow2.9.2Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2023-6977 —

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-1177271 days apartPath Traversal: '\..\filename' in mlflow/mlflow
    60This week
  • CVE-2023-69092 days apartPath Traversal: '\..\filename' in mlflow/mlflow
    57Plan
  • CVE-2024-3848148 days apartPath Traversal Bypass in mlflow/mlflow
    43Plan
  • CVE-2023-2780217 days apartPath Traversal: '\..\filename' in mlflow/mlflow
    41Plan
  • CVE-2023-69750 days apartPath Traversal: '\..\filename'
    40Plan
  • CVE-2024-3573117 days apartLocal File Inclusion (LFI) via Scheme Confusion in mlflow/mlflow
    37Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-29 · Path Traversal: '\..\filename'

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records