SGLang contains a model weight exfiltration vulnerability when no API keys are configured, as SGLang will expose two endpoints that allow a remote attacker to trigger distributed weight broadcasting using NCCL and then triggering data transfer, attackers can exfiltrate all model weights.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 04 Aug 2026 12:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Fri, 31 Jul 2026 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Fri, 31 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-306
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 30 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Sglang
Sglang sglang
Vendors & Products Sglang
Sglang sglang

Thu, 30 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Description SGLang contains a model weight exfiltration vulnerability when no API keys are configured, as SGLang will expose two endpoints that allow a remote attacker to trigger distributed weight broadcasting using NCCL and then triggering data transfer, attackers can exfiltrate all model weights.
Title CVE-2026-15978
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-07-31T18:10:22.232Z

Reserved: 2026-07-16T15:41:50.504Z

Link: CVE-2026-15978

cve-icon Vulnrichment

Updated: 2026-07-31T18:07:58.103Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-30T19:17:08.993

Modified: 2026-08-04T20:40:54.963

Link: CVE-2026-15978

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-04T23:00:15Z

Weaknesses