CVE-2026-15976

⛔ critical

Summary

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.

CVSS Score

9.8

Critical

EPSS Score

0.3

Exploit Probability

Published Date

2026-07-30

First Seen: 2026-07-31

📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 360,673 vulnerabilities in our database.

#34,152

Top 10% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 31, 2026

🔍 Exploitation Status

Poc

Proof-of-concept available

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-08-04

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-502

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
lmsys	sglang	Affected	< 0.5.15

🔗 References 2

https://github.com/sgl-project/sglang/security/advis...

Broken Link

https://thoughts.apoorvdayal.com/posts/sglang-disclo...

Third Party Advisory Mitigation

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-15969	⛔ critical	9.8	1.0	SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete den...	2026-07-30
CVE-2026-15971	⛔ critical	9.8	0.4	SGLang contains an RCE vulnerability when the optional dumper subsystem is enabled, allowing for a sandbox escape when D...	2026-07-30
CVE-2026-15974	🔶 medium	6.5	0.2	SGLang contains an SSRF and local file read in the multimodal generation endpoint /v1/chat/completions due to unsanitize...	2026-07-30
CVE-2026-15977	⚠️ high	7.5	0.2	SGLang contains a credential leakage vulnerability in the /server_info endpoint, which will return API keys and SSL keyf...	2026-07-30
CVE-2026-15978	⚠️ high	7.5	0.3	SGLang contains a model weight exfiltration vulnerability when no API keys are configured, as SGLang will expose two end...	2026-07-30
CVE-2026-14890	⛔ critical	9.1	0.9	SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that d...	2026-07-16

These CVEs affect the same products