Cross-site scripting in Apache HTTP Server - CVE-2026-29170
Published: June 8, 2026
Vulnerability identifier: #VU133907
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-29170
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Apache HTTP Server
Apache HTTP Server
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary script in a victim's browser.
The vulnerability exists due to cross-site scripting in mod_proxy_ftp HTML directory list generation when listing FTP directory contents via forward or reverse proxy configuration. A remote attacker can control FTP directory listing content to execute arbitrary script in a victim's browser.
The issue occurs during FTP directory listing generation.
How to mitigate CVE-2026-29170
Install security update from vendor's website.