CVE-2025-6504: Possibilities of IP Spoofing via X-Forwarded-For (XFF) Header

Severity: high (CVSS 8.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-29 · updated 2026-06-17
Weakness: CWE-345

Description

In HDP Server versions below 4.6.2.2978 on Linux, unauthorized access could occur via IP spoofing using the X-Forwarded-For header. Since XFF is a client-controlled header, it could be spoofed, allowing unauthorized access if the spoofed IP matched a whitelisted range. This vulnerability could be exploited to bypass IP restrictions, though valid user credentials would still be required for resource access.

Affected products

Progress Software Hybrid Data Pipeline: before 4.6.2.2978 — fixed in 4.6.2.2978

How to fix

Upgrade to a fixed version: Progress Software Hybrid Data Pipeline 4.6.2.2978. Check the vendor advisory for mitigations.

References

https://community.progress.com/s/article/DataDirect-Hybrid-Data-Pipeline-Critical-Security-Product-Alert-Bulletin-July-2025---CVE-2025-6504

Get alerted when CVE-2025-6504 or the next vulnerability affects your stack