CVE-2026-64849
Actively exploited. CVE-2026-64849 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-08-19) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-64849 is indexed in GitHub PoC and Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-64849 MLflow Server-Side Request Forgery Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified criteria . Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form . Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.
CSIRTS triage
- What
- Server-side request forgery enabling access to internal and cloud metadata services.
- Who is affected
- Federal and public deployments of MLflow prior to 3.15.0 with internet exposure.
- Urgency
- Critical; CISA BOD 26-04 prioritizes remediation of KEV-listed vulnerabilities with full system control post-exploitation.
- Action
- Apply MLflow 3.15.0 update urgently on all public-facing instances.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 63% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-64849 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
- NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗
Advisory coverage (5)
- unknownexploitedMLflow security advisory (AV26-832)cccs · 2026-08-19
- highexploitedCISA Adds One Known Exploited Vulnerability to Catalogcisa · 2026-08-19
- criticalexploitedCVE-2026-64849: MLflow Server-Side Request Forgery Vulnerabilitycisa-kev · 2026-08-19
- criticalexploitedCVE-2026-64849: MLflow is an open source AI engineering platform for agents, large language models, and machin…nvd · 2026-08-17
- criticalexploitedGHSA-7gwp-5pfp-969j: MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypasse…ghsa · 2026-08-17
External references
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[](https://www.csirts.com/cve/CVE-2026-64849)