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Description

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.

PUBLISHED Reserved 2025-09-19 | Published 2025-12-05 | Updated 2025-12-05 | Assigner apache

Problem types

CWE-918 Server-Side Request Forgery (SSRF)

Product status

Default status
unaffected

2.4.0 (semver)
affected

Timeline

2025-09-10:reported
2025-12-01:fixed in 2.4.x by r1930166

Credits

Orange Tsai (@orange_8361) from DEVCORE finder

References

www.openwall.com/lists/oss-security/2025/12/04/6

httpd.apache.org/security/vulnerabilities_24.html vendor-advisory

cve.org (CVE-2025-59775)

nvd.nist.gov (CVE-2025-59775)