CVE-2026-15978

highCVSS 7.5covered by 1 sourcefirst seen 2026-07-30

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.

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Exploitation outlook

Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-15978: SGLang contains a model weight exfiltration vulnerability when no API keys are configured, as …nvd · 2026-07-30

External references

NVD record for CVE-2026-15978

CVE.org record

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