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7.5High

CVE-2026-63718Apache HTTP Server: mod_proxy_uwsgi Transfer-Encoding response smuggling

Apache Software Foundation Apache HTTP Server Published: 2026-10-01 19:17 (1 month ago)

Description

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.

Weakness (CWE): CWE-444

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
Apache Software Foundation	Apache HTTP Server	2.4.30 – ≤ 2.4.68
apache	http server	2.4.30 – < 2.4.69

References and patches

https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisoryVendor Advisory
http://www.openwall.com/lists/oss-security/2026/10/01/26 Mailing ListThird Party Advisory

CPE matches (NVD) (1)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* ≥ 2.4.30 < 2.4.69

CVSS score

7.5High

Source: CISA-ADP · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

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

All scores (2)

CISA-ADP	CVSS 3.1	7.5High
134c704f-9b21-4f2e-91b3-4a467353bcc0	CVSS 3.1	7.5High

EPSS (chance of exploitation in 30 days)

0.43%

higher than 38% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: yes
Technical impact: partial

Timeline

ID reserved2026-07-17
Published2026-10-01 19:17
Reached IP-DB2026-10-24 23:43
Last updated2026-10-06 19:46

Assigned by (CNA): apache
NVD status: Analyzed

View at source: CVE.org · NVD

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