Denial of Service Vulnerability in SGLang by sgl-project
CVE-2026-112083

6.9MEDIUM

Key Information:

Vendor

Sgl-project

Status
Sglang
Vendor
CVE Published:
19 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-112083?

A vulnerability has been identified in the SGLang library, specifically impacting the Weight Exporter component. An attacker can exploit the function 'WeightExporter.send_weights_to_remote_instance' by manipulating the 'group_name' argument, leading to a denial of service. This flaw allows attackers to initiate a remote attack, potentially disrupting service for users. A pull request to remedy this issue is currently pending acceptance, while public exploit information has been released.

Affected Version(s)

SGLang 0.5.0

SGLang 0.5.1

SGLang 0.5.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-112083 - Proof of Concept

References

https://vuldb.com/vuln/421762
vdb-entrytechnical-description
https://vuldb.com/vuln/421762/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-112083
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zyz3366 (VulDB User)
VulDB CNA Team
.