---
title: "CVE-2026-63718: Apache HTTP Server - HTTP Request/Response Smuggling"
description: "Apache HTTP Server 2.4.30 through 2.4.68 contains an HTTP request/response smuggling vulnerability caused by inconsistent interpretation of HTTP requests in mod_proxy_uwsgi with crafted uwsgi responses, letting remote attackers perform request smuggling."
url: https://panop.io/threat-heartbeat/CVE-2026-63718/
---

# CVE-2026-63718 Apache HTTP Server - HTTP Request/Response Smuggling

Apache HTTP Server 2.4.30 through 2.4.68 contains an HTTP request/response smuggling vulnerability caused by inconsistent interpretation of HTTP requests in mod\_proxy\_uwsgi with crafted uwsgi responses, letting remote attackers perform request smuggling.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.50% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-63718)

## Details

Type

HTTP Request/Response Smuggling

Impact

HTTP Request Smuggling

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Published

1 October 2026

Updated

15 October 2026

Weakness

[CWE-444](https://cwe.mitre.org/data/definitions/444.html)

## Vendor fix

Upgrade to a version later than 2.4.68 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-63718](https://nvd.nist.gov/vuln/detail/CVE-2026-63718)
- [http://www.openwall.com/lists/oss-security/2026/10/01/26](http://www.openwall.com/lists/oss-security/2026/10/01/26)
- [https://httpd.apache.org/security/vulnerabilities\_24.html](https://httpd.apache.org/security/vulnerabilities_24.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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