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TI-2026-76467 Aliases CVE-2026-112267GHSA-mg89-3m78-qwqg

Server-side request forgery in SGLang via bootstrap_host and bootstrap_port

Priority HIGH 70CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

SGLang through 0.5.22 in prefill/decode disaggregation mode contains a server-side request forgery flaw (CWE-918) in which client-supplied bootstrap_host and bootstrap_port fields are used for outbound requests. An unauthenticated remote attacker can send crafted requests to the Decode worker's /generate endpoint to probe internal hosts and ports and block the shared scheduler loop, delaying other inference requests.

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

Description from the CNA

SGLang through 0.5.22 in prefill/decode disaggregation mode contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger outbound requests via client-supplied bootstrap_host and bootstrap_port fields. Attackers sending crafted requests to the Decode worker's /generate endpoint can probe internal hosts and ports and block the shared scheduler loop, delaying other inference requests.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00423 36th percentileScored 2026-11-07
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

VendorProductAffected versionsFixed inStatusSource
sgl-projectsglangup to 0.5.22—No fix listedCNA
  • sglang Vendorsgl-project Affected up to 0.5.22 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for sglang.

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

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112267
  2. 2026-10-19 Alias added: GHSA-mg89-3m78-qwqg
  3. 2026-10-20 CISA SSVC decision points changed
  4. 2026-10-20 Priority changed: MEDIUM → HIGH

References

Other 3

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences