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CVE-2026-48818Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows

Kludex starlette; Red Hat Red Hat AI Inference Server 3.3; Red Hat Exploit Intelligence; Red Hat Migration Toolkit for Applications 8 Yayım: (4 ay önce)

Açıklama

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.

Zayıflık türü (CWE): CWE-918

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

Kaynaklar ve yamalar

CPE eşleşmeleri (NVD) (1)

  • cpe:2.3:a:encode:starlette:*:*:*:*:*:python:*:* < 1.1.0