TI-2026-76271 Aliases CVE-2026-112083 GHSA-hqw5-mw82-chh2

Denial of service in SGLang Weight Exporter via group_name argument

HIGH 70CWE-404Published 2026-10-19 · Updated 2026-10-19

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

SGLang from 0.5.0 through 0.5.19 contains a flaw in the Weight Exporter component, in the WeightExporter.send_weights_to_remote_instance function. Manipulating the group_name argument causes resources to not be released properly (CWE-404). A remote attacker can cause a denial of service without privileges or user interaction. A public exploit has been released.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00419 36th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
sgl-project	SGLang	0.5.0; 0.5.1; 0.5.2; 0.5.3; 0.5.4; 0.5.5; 0.5.6; 0.5.7; 0.5.8; 0.5.9; 0.5.10; 0.5.11; 0.5.12; 0.5.13; 0.5.14; 0.5.15; 0.5.16; 0.5.17; 0.5.18; 0.5.19	—	No fix listed	CNA

SGLang Vendorsgl-project Affected 0.5.0; 0.5.1; 0.5.2; 0.5.3; 0.5.4; 0.5.5; 0.5.6; 0.5.7; 0.5.8; 0.5.9; 0.5.10; 0.5.11; 0.5.12; 0.5.13; 0.5.14; 0.5.15; 0.5.16; 0.5.17; 0.5.18; 0.5.19 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:sgl-project:sglang::::::::	—	—	—

cpe:2.3:a:sgl-project:sglang:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

The sources list no fixed version for SGLang. A pull request to fix this issue awaits acceptance.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-19 Threatist record created from CVE-2026-112083
2026-10-19 Alias added: GHSA-hqw5-mw82-chh2
2026-10-19 CISA SSVC decision points changed
2026-10-19 Priority changed: MEDIUM → HIGH

References

TI-2026-76247 Denial of service in SGLang expert-distribution recording endpoint CVSS 4.0HIGH 8.7
TI-2026-70996 SGLang disables decompression bomb check, enabling denial of service CVSS 4.0HIGH 8.7
TI-2026-70994 SGLang Memory Exhaustion DoS via Qwen-VL Video Preprocessing CVSS 4.0HIGH 8.7
TI-2026-70993 Decompression amplification in SGLang load_audio exhausts memory CVSS 4.0HIGH 8.7
TI-2026-65453 SGLang through 0.5.20 Denial of Service via Duplicate bootstrap_room CVSS 4.0HIGH 8.7
TI-2026-75290 Code injection in SGLang debug dumper filter CVSS 4.0CRITICAL 9.2

See all 21 →

Sources

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