CVE-2026-2393 — mlflow mlflow/mlflow

What is CVE-2026-2393?

A Server-Side Request Forgery (SSRF) vulnerability exists in MLflow versions prior to 3.9.0. The `_create_webhook()` function in `mlflow/server/handlers.py` accepts a user-controlled `url` parameter without validation, and the `_send_webhook_request()` function in `mlflow/webhooks/delivery.py` sends HTTP POST requests to this attacker-controlled URL. This allows an authenticated attacker to force the MLflow backend to send HTTP requests to internal services, cloud metadata endpoints, or arbitrary external servers. The lack of input sanitization, URL scheme filtering, or allowlist validation on the webhook URL enables exploitation, potentially leading to cloud credential theft, internal network access, and data exfiltration.

The record classifies CVE-2026-2393 under weakness class CWE-918. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 170 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 7.1 — HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
EPSS (FIRST): 0.2% probability of exploitation in the next 30 days, higher than 19.5% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 4.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-05-11

Is CVE-2026-2393 being exploited?

It currently carries a trending score of 10 in the Threadlinqs vulnerability feed.

Affected products and versions

mlflow: mlflow/mlflow

How to fix CVE-2026-2393

The record marks a vendor fix as available for CVE-2026-2393. Patch reference: https://github.com/mlflow/mlflow/commit/64aa0ab7207f9c649b59ba1a5f40d82196817389. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-2393

1 tracked threat in the Threadlinqs corpus references CVE-2026-2393, either in the campaign’s CVE list or as an indicator on the campaign record.

CVE-2026-64849 — MLflow Server-Side Request Forgery (SSRF) Vulnerability in Model Registry Webhooks — CRITICAL · 2026-08-19

Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.