What is CVE-2026-48818?

CVE-2026-48818 is a high-severity vulnerability in Kludex Starlette, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-06-17.

How severe is CVE-2026-48818?

High severity. CVSS v3 base score is 7.5 out of 10.

SSRF in Kludex Starlette

CVE-2026-48818

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 befo…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Kludex Starlette — versions < 1.1.0

Weakness classification (CWE)

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

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48818?: CVE-2026-48818 is a high-severity vulnerability in Kludex Starlette, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-06-17.
How severe is CVE-2026-48818?: High severity. CVSS v3 base score is 7.5 out of 10.