CVE-2026-15978

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-15978
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-30 19:17:08 UTC
Updated2026-07-31 19:17:03 UTC
DescriptionSGLang 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-306 | CWE-306: Missing Authentication for Critical Function | CWE-306 CWE-306 Missing Authentication for Critical Function

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA SGLang SGLang affected v0.5.15 custom Not specified

References

ReferenceSourceLinkTags
thoughts.apoorvdayal.com/posts/sglang-disclosures 134c704f-9b21-4f2e-91b3-4a467353bcc0 thoughts.apoorvdayal.com
github.com/sgl-project/sglang/security/advisories/GHSA-cpqq-22v3-2wfm [email protected] github.com
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