Vulnerability in Red Hat Enterprise Linux 10

CVE-2025-14523

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confu…

Vulnerability class: HTTP Request Smuggling

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-14523?
CVE-2025-14523 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 8.2/10. Published 2025-12-11.
How severe is CVE-2025-14523?
High severity. CVSS v3 base score is 8.2 out of 10.