CVE-2026-63045 Apache HTTP Server: mod_proxy_ftp PASV address handling
An attacker controlling an FTP server can force the Apache proxy to connect to arbitrary internal hosts via crafted PASV responses in forward proxy setups.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-63045?
CVE-2026-63045 is a high-severity server-side request forgery vulnerability in Apache Http Server, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper validation of FTP PASV reply address in mod_proxy_ftp in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows, in forward proxy configurations, an untrusted FTP server to cause the proxy to open a data connection to an arbitrary third-party host via a crafted PASV response.
Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Weakness: CWE-284
Which versions are affected by CVE-2026-63045?
1 open source package ship an affected version, including apache. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache Bitnami | From 2.4.0 | 2.4.69 |
Products include Apache Http Server.
How do I fix CVE-2026-63045?
Upgrade apache to 2.4.69 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-63045 being exploited?
There is no known exploitation of CVE-2026-63045 in the wild and no public exploit code.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2026-63045, AZL-106779, BELL-CVE-2026-63045, BIT-apache-2026-63045, DEBIAN-CVE-2026-63045, ECHO-cbf0-cb8c-fdf2 and 4 more.