A security flaw has been discovered in sgl-project SGLang up to 0.5.19. Affected is the function WeightExporter.send_weights_to_remote_instance of the file python/sglang/srt/model_executor/model_runner_components/weight_exporter.py of the component Weight Exporter. Performing a manipulation of the argument group_name results in denial of service.
The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
sgl-project:sglang
References 7
https://vuldb.com/vuln/421762
VDB-421762 | sgl-project SGLang Weight Exporter weight_exporter.py WeightExporter.send_weights_to_remote_instance denial of service
https://vuldb.com/vuln/421762/cti
VDB-421762 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/cve/CVE-2026-112083
CVE-2026-112083 | CVE Analysis and Report
https://vuldb.com/submit/1009919
Submit #1009919 | SGLang Project (sgl-project) SGLang 0.5.19 Denial of Service
https://github.com/sgl-project/sglang/issues/42073
NVD
https://github.com/sgl-project/sglang/pull/44314
NVD
https://github.com/sgl-project/sglang/
NVD