CVE-2026-48710
medium
CVSS v3
6.5
CVSS v2
—
VIR risk
6.5
Description
BadHost: Missing Host header validation poisons request.url.path, bypassing path-based security checks
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-48710
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-48710.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bullseye | affected | |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | bookworm | fixed | 0.26.1-1+deb12u1 |
| debian | trixie | fixed | 0.46.1-3+deb13u2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | starlette | <1.0.1 | 1.0.1 |
References
- https://github.com/Kludex/starlette/security/advisories/GHSA-86qp-5c8j-p5mr
- https://github.com/Kludex/starlette/commit/764dab0dcfb9033d75442d7a359645c9f94648c6
- https://badhost.org
- https://github.com/pypa/advisory-database/tree/main/vulns/starlette/PYSEC-2026-161.yaml
- https://ostif.org/disclosing-the-badhost-vulnerability-in-starlette
- https://www.secwest.net/starlette
- https://www.x41-dsec.de/lab/advisories/x41-2026-002-starlette
- https://ostif.org/disclosing-the-badhost-vulnerability-in-starlette/
- https://www.x41-dsec.de/lab/advisories/x41-2026-002-starlette/
- https://www.suse.com/security/cve/CVE-2026-48710.html
- https://security-tracker.debian.org/tracker/CVE-2026-48710
CWEs
CWE-444
Verify integrity in audit chain (admin only). AS-IS.