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archive/Patch now/AIR-2026-1493
closedclosed 23 Oct 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-115886: MLflow GenAI scorer endpoints allow unsafe deserialization

MLflow

MLflow versions 3.12.0rc0 through 3.17.0 accept serialized third-party scorer data in GenAI evaluate and invoke endpoints without constraining constructors. When specific optional packages are installed, this can be exploited by attackers.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.5
EPSS
0.01 · top 48% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
23 Oct 2026
last update
23 Oct 2026
CVE ids
CVE-2026-115886other records

Timeline · 1

  1. 23 Oct 2026CVE-2026-115886: MLflow is an open source AI engineering platform for agents, large language models, and machine learning models.

Sources · 1

Advisories and databases

  1. 2026-10-23
    CVE-2026-115886: MLflow is an open source AI engineering platform for agents, large language models, and machine learning models.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-115886

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
mlflowdeserialization
dates
happened 23 Oct 2026 · first reported 23 Oct 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-24 05:11Z · updated 2026-10-24 05:11Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-115886: MLflow GenAI scorer endpoints allow unsafe deserialization

https://gcdradar.vercel.app/incidents/cve-2026-115886-mlflow-genai-scorer-endpoints-allow-unsafe-d · AIR-2026-1493 · closed 2026-10-23

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-10-23
- AI role: Attack on AI
- Products: MLflow
- CVE ids: CVE-2026-115886
- CVSS: 6.5

## Summary

MLflow versions 3.12.0rc0 through 3.17.0 accept serialized third-party scorer data in GenAI evaluate and invoke endpoints without constraining constructors. When specific optional packages are installed, this can be exploited by attackers.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-10-23: CVE-2026-115886: MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. (https://nvd.nist.gov/vuln/detail/CVE-2026-115886)

## Sources

- 2026-10-23 NVD: CVE-2026-115886: MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. https://nvd.nist.gov/vuln/detail/CVE-2026-115886

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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