CVE-2026-15976CWE-502insecure-deserialization

CVE-2026-15976

Critical · published July 30, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00604 · 48.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-07-30T23:17Z
Affected products (1)
ProductVersionsFixed in
lmsys/sglang≤ 0.5.15—
References (3)
https://github.com/sgl-project/sglang/security/advisories/GHSA-wf98-gv64-5wrf · [email protected]https://thoughts.apoorvdayal.com/posts/sglang-disclosures/ · [email protected]https://thoughts.apoorvdayal.com/posts/sglang-disclosures/ · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 30 JUL 18:07Z
    CVE-2026-15976
    cvelistv5