CVE-2026-112267 Details
Description
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.
A server-side request forgery (SSRF) vulnerability has been identified in SGLang versions through 0.5.22, specifically in prefill/decode disaggregation mode. This vulnerability allows unauthenticated attackers to send outbound requests by manipulating the bootstrap_host and bootstrap_port fields in their requests. When these crafted requests are sent to the Decode worker's /generate endpoint, attackers can probe internal hosts and ports. Additionally, the exploitation of this vulnerability can disrupt the shared scheduler loop, causing delays in processing other inference requests.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 19, 2026CISA-ADP
Assessed Oct 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/sgl-project/sglang/issues/45008 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common/conn.py#L1157-L1181 | [email protected] | Source CodeVendor |
| https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/decode.py#L1150-L1175 | [email protected] | Source CodeVendor |
| https://github.com/sgl-project/sglang/issues/45008 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://www.vulncheck.com/advisories/sglang-through-0.5.22-ssrf-via-bootstrap-host-and-bootstrap-port-on-decode-worker | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SGLang | <= 0.5.22 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 19, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |