What is CVE-2025-59775?

CVE-2025-59775 is a high-severity vulnerability in Apache Http Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2025-12-05.

How severe is CVE-2025-59775?

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

SSRF in Apache Http Server

CVE-2025-59775

Server-Side Request Forgery (SSRF) vulnerability in Apache HTTP Server on Windows with AllowEncodedSlashes On and MergeSlashes Off allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.66, which fixes the issue.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.008 (52.4th 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

Apache Http_server
Apache Software Foundation Http Server — versions 2.4.0

Weakness classification (CWE)

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

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Issue Tracking, Third Party Advisory)

Frequently asked questions

What is CVE-2025-59775?: CVE-2025-59775 is a high-severity vulnerability in Apache Http Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2025-12-05.
How severe is CVE-2025-59775?: High severity. CVSS v3 base score is 7.5 out of 10.