MEDIUM CISA KEV

CVE-2026-48710

CVSS v3

6.5

MEDIUM

EPSS Score

0.0 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP `Host` request header was not validated before being used to reconstruct `request.url`. Because the routing algorithm relies on the raw HTTP path while `request.url` is rebuilt from the `Host` header, a malformed header could make `request.url.path` differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on `request.url` (rather than the raw `scope` path)

CISA Known Exploited Vulnerability

Date Added: 2026-09-02
Patch Due Date: 2026-09-16
Ransomware Use: Unknown

Technical details

Published: 2026-05-26
Last Modified: 2026-08-10

Frequently asked questions

What is CVE-2026-48710?

Is CVE-2026-48710 actively exploited?

Yes. CVE-2026-48710 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-16.

What is the CVSS score for CVE-2026-48710?

CVE-2026-48710 has a CVSS v3 base score of 6.5 (MEDIUM severity).

Is CVE-2026-48710 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IP Search CVEs SIEM & TIP integrations

No credit card required · 500 free checks/month · Free API key

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database