[NEW] [high] MLflow: Vulnerability enables bypassing security measures
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A remote, anonymous attacker can exploit a vulnerability in MLflow to bypass security measures and disclose or manipulate data.
CSIRTS triage
- What
- MLflow contains a vulnerability that allows bypassing security measures to disclose or manipulate data.
- Who is affected
- Remote deployments of MLflow are affected by anonymous unauthenticated attacks.
- Urgency
- High urgency; the vulnerability is actively exploited in the wild and has high severity impact.
- Action
- Update MLflow to a patched version immediately upon availability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2946
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2026-64849Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 95% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-64849 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownexploitedMLflow security advisory (AV26-832)cccs
- highexploitedCISA Adds One Known Exploited Vulnerability to Catalogcisa
- criticalexploitedCVE-2026-64849: MLflow Server-Side Request Forgery Vulnerabilitycisa-kev
- criticalexploitedCVE-2026-64849: MLflow is an open source AI engineering platform for agents, large language models, and machin…nvd
- criticalexploitedGHSA-7gwp-5pfp-969j: MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypasse…ghsa
Recent advisories for MLflow
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownexploitedMLflow security advisory (AV26-832)cccs · 2026-08-19
- criticalexploitedCVE-2026-64849: MLflow Server-Side Request Forgery Vulnerabilitycisa-kev · 2026-08-19
- highCVE-2026-69148: MLflow is an open source AI engineering platform for agents, large language models, and machin…nvd · 2026-08-17
- mediumCVE-2026-69146: MLflow is an open source AI engineering platform for agents, large language models, and machin…nvd · 2026-08-17
- criticalexploitedCVE-2026-64849: MLflow is an open source AI engineering platform for agents, large language models, and machin…nvd · 2026-08-17
- highGHSA-gqch-g4w5-7qcw: MLflow: CreateModelVersion source validation does not check READ permission on referenced…ghsa · 2026-08-17
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