Severity: low 

Affected versions:

- Apache HTTP Server 2.4.0 through 2.4.68

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.

Credit:

Zhen Kong (finder)
4ra1n, pyn3rd and unam4 (finder)
Charles Vosburgh (finder)
sungbyeongchan (finder)
Daradigu / RELAUNCH DEPT. (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-63045

Timeline:

2026-07-07: Report received
2026-10-01: fixed in 2.4.x by r1938674
2026-10-01: 2.4.69 released

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