{"action":"Upgrade starlette to 1.1.0 or later.","affected":[{"fixed":"1.1.0","introduced":"0"}],"component":"starlette","cve_ids":["CVE-2026-48818"],"ecosystem":"PyPI","epss":0.00368,"exploited":false,"fixed_versions":["1.1.0"],"ghsa_id":"GHSA-wqp7-x3pw-xc5r","id":"tcs_01M5KGYH974VS9FT1Y1P57AB99","modified_at":"2026-07-13T07:15:42.493904758Z","published_at":"2026-06-17T19:18:09.807Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2281","https://access.redhat.com/security/cve/CVE-2026-48818","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48818.json","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://github.com/Kludex/starlette/releases/tag/1.1.0","https://github.com/Kludex/starlette/security/advisories/GHSA-wqp7-x3pw-xc5r","https://bugzilla.redhat.com/show_bug.cgi?id=2490020","https://github.com/Kludex/starlette/commit/fd53168a7767b6b55ba5af787fd88f49e33cabc5","https://github.com/Kludex/starlette/pull/3287"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-2281","url":"https://osv.dev/vulnerability/PYSEC-2026-2281"}],"summary":"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 i"}