---
id: CVE-2026-63718
title: >-
  Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response
  Smuggling') response smuggling vulnerability in Apache HTTP Server via
  mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding.




  This issue affects Apache…
summary: >-
  Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response
  Smuggling') response smuggling vulnerability in Apache HTTP Server via
  mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding.




  This issue affects Apache…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-444
vendor: apache
product: http_server
affected:
  - 'http_server >= 2.4.30, < 2.4.69'
patched:
  - http_server 2.4.69
published: '2026-10-01'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T16:46:24.983'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63718'
references:
  - url: 'https://httpd.apache.org/security/vulnerabilities_24.html'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/10/01/26'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63718.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-63718'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2544781'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-63718'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63718'
  - url: 'https://access.redhat.com/errata/RHSA-2026:74858'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00434
epssPercentile: 0.37522
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-01T19:44:40.051855Z'
ingestedAt: '2026-10-01T18:55:42.364Z'
---

## Overview

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding.



This issue affects Apache HTTP Server: from 2.4.30 through 2.4.68.

## Affected

- `http_server >= 2.4.30, < 2.4.69`

## Remediation

Upgrade past the affected range:

- `http_server 2.4.69`

## Vendor advisories

- **Red Hat VEX** · Important · 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 10, Red Hat Enterprise Linux 6, 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-2026-63718.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)