CVE-2026-15978 json
CVE-2026-15978
published 2026-07-30 3 mo ago modified 2026-08-04 3 mo ago also EUVD-2026-51266
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- thoughts.apoorvdayal.com https://thoughts.apoorvdayal.com/posts/sglang-disclosures/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- SGLang SGLang
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
thoughts.apoorvdayal.com
/posts/sglang-disclosures/
exploit, third-party-advisory, mitigation
-
github.com
/sgl-project/sglang/security/advisories/GHSA-cpqq-22v3-2wfm
broken-link
Sources
- CVE List CVE-2026-15978
- NVD CVE-2026-15978
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