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CVE-2026-15978

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c9b45912ec4337036a3aa9da2f1cb9698b2d327d5334e4f6750f1c9d27fcff71
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-306","description":"CWE-306 Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"CWE-306: Missing Authentication for Critical Function","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"SGLang","vendor":"SGLang","versions":[{"lessThanOrEqual":"v0.5.15","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-306","description":"CWE-306 Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"CWE-306: Missing Authentication for Critical Function","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/sgl-project/sglang/security/advisories/GHSA-cpqq-22v3-2wfm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/cna/references/0
{"url":"https://thoughts.apoorvdayal.com/posts/sglang-disclosures/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://thoughts.apoorvdayal.com/posts/sglang-disclosures/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c673a1cfc66a67042edcb67b4c8ef733e7341b9a452b984d281379289207a7a6 · sha256:37b115b18c575ad0… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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