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CVE-2026-112083— sgl-project SGLang Weight Exporter weight_exporter.py WeightExporter.send_weights_to_remote_instance denial of service

Quick assessment

Affected
sgl-project SGLang
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 sgl-project 的 SGLang 项目（版本 0.5.19 及更早版本）中发现了一个安全漏洞。该漏洞影响位于 文件中、属于 Weight Exporter 组件的 函数。攻击者可通过篡改 参数引发拒绝服务（DoS）攻击。该攻击可远程发起。利用代码已向公众发布，可能被用于实际攻击。目前，修复该问题的拉取请求（Pull Request）正在等待审核接受。

CVSS 5.3 · Medium EPSS 0.42% · P35

Affected Version Matrix 20

VendorProduct Version RangeStatus
sgl-project SGLang 0.5.0 affected
0.5.1 affected
0.5.2 affected
0.5.3 affected
0.5.4 affected
0.5.5 affected
0.5.6 affected
0.5.7 affected
… +12 more rows
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I. Basic Information for CVE-2026-112083

Vulnerability Information
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Vulnerability Title
sgl-project SGLang Weight Exporter weight_exporter.py WeightExporter.send_weights_to_remote_instance denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sgl-project SGLang 0.5.0 cpe:2.3:a:sgl-project:sglang:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-112083

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III. Intelligence Information for CVE-2026-112083

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Patches & Fixes for CVE-2026-112083 (1)

Other References for CVE-2026-112083 (1)

Same Patch Batch · sgl-project · 2026-10-19 · 7 CVEs total

CVE-2026-112082 7.5 HIGH sgl-project SGLang Expert-Distribution Recording Endpoint expert_distribution.py Scheduler
CVE-2026-112267 6.5 MEDIUM SGLang through 0.5.22 SSRF via bootstrap_host and bootstrap_port on Decode Worker
CVE-2026-112270 6.5 MEDIUM SGLang through 0.5.22 Memory Exhaustion via Mooncake STAGING_RSP chunk_idx
CVE-2026-112269 6.5 MEDIUM SGLang through 0.5.22 Memory Exhaustion via Unauthenticated Mooncake Decode Registrations
CVE-2026-112268 6.3 MEDIUM sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
CVE-2026-112266 5.9 MEDIUM SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching

IV. Related Vulnerabilities

Same product: SGLang
Same vendor: sgl-project
Same weakness: CWE-404

V. Comments for CVE-2026-112083

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