CVE-2026-48818

Katalog CVE

CVSS 7.5 · High EPSS 0,65%

Kerentanan Server-Side Request Forgery (SSRF) pada encode starlette. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

17 Juni 2026

Terakhir diubah

4 Agustus 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/Kludex/starlette/security/advisories/GHSA-wqp7-x3pw-xc5r mitigasi · advisory vendor
• https://github.com/Kludex/starlette/commit/fd53168a7767b6b55ba5af787fd88f49e33cabc5 patch
• https://github.com/Kludex/starlette/pull/3287 patch
• https://github.com/Kludex/starlette/releases/tag/1.1.0 release notes
• https://github.com/pypa/advisory-database/tree/main/vulns/starlette/PYSEC-2026-2281.yaml
• https://access.redhat.com/errata/RHSA-2026:30087
• https://access.redhat.com/errata/RHSA-2026:30088
• https://access.redhat.com/errata/RHSA-2026:30089
• https://access.redhat.com/security/cve/CVE-2026-48818
• https://bugzilla.redhat.com/show_bug.cgi?id=2490020
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48818.json