{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48818","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-22T20:57:10.976Z","datePublished":"2026-06-17T17:50:12.399Z","dateUpdated":"2026-06-30T12:09:57.469Z"},"containers":{"cna":{"title":"Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows","problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Kludex/starlette/security/advisories/GHSA-wqp7-x3pw-xc5r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Kludex/starlette/security/advisories/GHSA-wqp7-x3pw-xc5r"},{"name":"https://github.com/Kludex/starlette/pull/3287","tags":["x_refsource_MISC"],"url":"https://github.com/Kludex/starlette/pull/3287"},{"name":"https://github.com/Kludex/starlette/commit/fd53168a7767b6b55ba5af787fd88f49e33cabc5","tags":["x_refsource_MISC"],"url":"https://github.com/Kludex/starlette/commit/fd53168a7767b6b55ba5af787fd88f49e33cabc5"},{"name":"https://github.com/Kludex/starlette/releases/tag/1.1.0","tags":["x_refsource_MISC"],"url":"https://github.com/Kludex/starlette/releases/tag/1.1.0"}],"affected":[{"vendor":"Kludex","product":"starlette","versions":[{"version":"< 1.1.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-17T17:50:12.399Z"},"descriptions":[{"lang":"en","value":"Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and earlier, StaticFiles on Windows is vulnerable to SSRF. An UNC path such as \\\\attacker.com\\share can cause os.path.realpath to initiate an outbound SMB connection before the path is rejected, exposing the service account’s NTLMv2 credentials for offline cracking or relay even though the HTTP response is only a 404. The issue affects default follow_symlink=False deployments, including frameworks built on Starlette such as FastAPI; POSIX systems and follow_symlink=True are unaffected. The issue is fixed in 1.1.0."}],"source":{"advisory":"GHSA-wqp7-x3pw-xc5r","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-17T19:31:32.312592Z","id":"CVE-2026-48818","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-17T19:31:45.487Z"}},{"affected":[{"cpes":["cpe:/a:redhat:ai_inference_server:3.3::el9"],"defaultStatus":"affected","product":"Red Hat AI Inference Server 3.3","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:exploit_intelligence:0"],"defaultStatus":"unaffected","product":"Exploit Intelligence","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:migration_toolkit_applications:8"],"defaultStatus":"unaffected","product":"Migration Toolkit for Applications 8","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift_lightspeed"],"defaultStatus":"unaffected","product":"OpenShift Lightspeed","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:ai_inference_server:3"],"defaultStatus":"unaffected","product":"Red Hat AI Inference Server","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:ansible_automation_platform:2"],"defaultStatus":"unaffected","product":"Red Hat Ansible Automation Platform 2","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux_ai:3"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux AI (RHEL AI) 3","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"unaffected","product":"Red Hat Hardened Images","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","product":"Red Hat Satellite 6","vendor":"Red Hat"}],"datePublic":"2026-06-17T17:50:12.399Z","descriptions":[{"lang":"en","value":"A flaw was found in Starlette, a lightweight ASGI framework. On Windows systems, the StaticFiles component is vulnerable to Server-Side Request Forgery (SSRF). A remote attacker can exploit this by providing a specially crafted Universal Naming Convention (UNC) path, which causes the system to initiate an outbound Server Message Block (SMB) connection. This action can expose the service account's NTLMv2 credentials, potentially leading to information disclosure or further attacks."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-48818"},{"name":"RHBZ#2490020","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2490020"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48818.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30089"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30088"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30087"}],"solutions":[{"lang":"en","value":"RHSA-2026:30089: Red Hat AI Inference Server 3.3"},{"lang":"en","value":"RHSA-2026:30088: Red Hat AI Inference Server 3.3"},{"lang":"en","value":"RHSA-2026:30087: Red Hat AI Inference Server 3.3"}],"timeline":[{"lang":"en","time":"2026-06-17T19:03:44.998Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-17T17:50:12.399Z","value":"Made public."}],"title":"starlette: Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows","workarounds":[{"lang":"en","value":"Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:09:57.469Z"}}]}}