High 7.5Published Jul 30, 2026

CVE-2026-15978CVE-2026-15978

Updated under an hour ago (Oct 27, 2026, 12:10 PM ET)

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It affects SGLang and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for SGLang

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: certcc
NVD analysis: Analyzed
Record last updated: Jul 31, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

SGLang SGLang sglang:sglang (from the name)	through v0.5.15	CNA record
lmsys sglang lmsys:sglang	through 0.5.15	NVD

References

References

https://github.com/sgl-project/sglang/security/advisories/GHSA-cpqq-22v3-2wfm	broken-link
https://thoughts.apoorvdayal.com/posts/sglang-disclosures/	third-party-advisory, mitigation

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.