SSRF in Apache Http_server

CVE-2024-43394

Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via  mod_rewrite or apache expressions that pass unvalidated request input. This issue affects Apache HTTP Se…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.011 (61.4th percentile) — read the EPSS interpretation.

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

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-43394?
CVE-2024-43394 is a high-severity vulnerability in Apache Http_server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2025-07-10.
How severe is CVE-2024-43394?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-43394 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.