HighVulnerabilityLLM-specific

CVE-2026-2611: MLflow Assistant improper origin validation in /ajax-api endpoints

Source: NVD(opens in a new tab)
Identifier: CVE-2026-2611
Published: May 19, 2026
Record updated: October 9, 2026

Affected: mlflow = 3.9.0
Fixed in: 3.10.0
Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-2611 affects MLflow 3.9.0, where the MLflow Assistant feature has improper origin validation in its /ajax-api endpoints. A remote attacker can use cross-origin requests from a malicious webpage to reach the Assistant on a victim's local machine, bypass the loopback-only restriction, and change its configuration to enable full access, which allows arbitrary command execution via the Claude Code sub-agent.

Mitigation

Fixed in 3.10.0.

Details

Scores and exploitation

Patch available: Yes
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 13, 2026.
Disclosure date: May 19, 2026

Weaknesses and techniques

Weakness (CWE): CWE-346
AI threat technique (MITRE ATLAS): AML.T0054

Affected

Packages: mlflow@= 3.9.0 (fixed: 3.10.0)

Classification

Attack type: Jailbreak
Attack sophistication: Moderate
AI component targeted: Agent
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-2611

First tracked: May 19, 2026 at 08:08 AM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

mlflowPyPILLM dependency since 2024-05-30 · 17 tracked dependents

Summary

Mitigation

Affected packages in the Exposure Registry

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