Intel

CVE-2026-15976

lmsys sglang: Sicherheitsluecke

criticalEPSS 0.6%

Affected

  • lmsys/sglang between *..0.5.15

Description

SGLang contains a RCE vulnerability when attempting to load model weights from a HuggingFace repository, specifically within the /update_weights_from_disk, where torch.load(..., weights_only=False) fallback enables pickle deserialization of .bin files.

Source: NVD (NIST)cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

lmsyssglang
0.5.15

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
47.3 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
90.59
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
0.6 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-07-30 18:07 UTC

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. Initial Analysis2026-08-04 20:41 UTC· nvd@nist.gov
    • CPE Configuration: OR *cpe:2.3:a:lmsys:sglang:*:*:*:*:*:*:*:* versions up to (including) 0.5.15
    • Reference Type: CERT/CC: https://github.com/sgl-project/sglang/security/advisories/GHSA-wf98-gv64-5wrf Types: Broken Link
    • Reference Type: CERT/CC: https://thoughts.apoorvdayal.com/posts/sglang-disclosures/ Types: Mitigation, Third Party Advisory
    • Reference Type: CISA-ADP: https://thoughts.apoorvdayal.com/posts/sglang-disclosures/ Types: Mitigation, Third Party Advisory
  2. CVE Modified2026-07-31 20:16 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    • CWE: CWE-502
    • Reference: https://thoughts.apoorvdayal.com/posts/sglang-disclosures/
    • SSVC: {"id":"CVE-2026-15976","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalI…
  3. New CVE Received2026-07-30 19:17 UTC· cret@cert.org
    • Affected: SGLang
    • Description: SGLang contains a RCE vulnerability when attempting to load model weights from a HuggingFace repository, specifically within the /update_weights_from_disk, where torch.load(..., weights_only=False) fallback enables pickle deserialization of .bin files.
    • Reference: https://github.com/sgl-project/sglang/security/advisories/GHSA-wf98-gv64-5wrf
    • Reference: https://thoughts.apoorvdayal.com/posts/sglang-disclosures/

Linked advisories