---
id: CVE-2026-63045
title: >-
  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…
summary: >-
  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…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-284
  - CWE-918
vendor: apache
product: http_server
affected:
  - 'http_server >= 2.4.0, < 2.4.69'
patched:
  - http_server 2.4.69
published: '2026-10-01'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T13:15:35.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63045'
references:
  - url: 'https://httpd.apache.org/security/vulnerabilities_24.html'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/10/01/23'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63045.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-63045'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2544823'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-63045'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63045'
  - url: 'https://access.redhat.com/errata/RHSA-2026:74858'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00441
epssPercentile: 0.38114
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-01T18:30:13.273627Z'
scores:
  nvd: 7.5
  vendor: 5.3
ingestedAt: '2026-10-01T18:55:42.363Z'
---

## Overview

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.

## Affected

- `http_server >= 2.4.0, < 2.4.69`

## Remediation

Upgrade past the affected range:

- `http_server 2.4.69`

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63045.json)
- **RHSA-2026:74858** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-02 · [advisory](https://access.redhat.com/errata/RHSA-2026:74858)