CVE-2026-48005
Received Received - Intake

Denial of Service in Apache HTTP Server via Digest Auth Bypass

Publication date: 2026-10-01

Last updated on: 2026-10-01

Assigner: Apache Software Foundation

Description
Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re-authentication) via forged Authorization headers when Digest authentication is enabled with AuthDigestNcCheck . Users are recommended to upgrade to version 2.4.69, which fixes this issue.

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Meta Information

Published
2026-10-01
Last Modified
2026-10-01
Generated
2026-10-01
AI Q&A
2026-10-01
EPSS Evaluated
N/A
NVD
CVE-2026-48005
EUVD
EUVD-2026-90892

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache_software_foundation apache_http_server 2.4.69

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

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Executive Summary

This vulnerability involves missing authentication checks in mod_auth_digest for Apache HTTP Server before version 2.4.69. When Digest authentication is enabled with AuthDigestNcCheck, an unauthenticated remote client can send forged Authorization headers to force a denial of service by triggering repeated re-authentication attempts.

Detection Guidance

To detect this vulnerability, check if your Apache HTTP Server version is below 2.4.69. Run the command: httpd -v or apache2 -v. If the version is older, the system is vulnerable.

Impact Analysis

This vulnerability can cause service disruption by forcing repeated re-authentication attempts, leading to increased server load and potential unavailability of the affected Apache HTTP Server instances.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized access or disruption of services. The lack of authentication checks may lead to unauthorized data access or denial of service, which could violate confidentiality and availability requirements under these regulations.

Mitigation Strategies

Upgrade Apache HTTP Server to version 2.4.69 or later immediately. Follow your distribution's update process or download the latest version from the official Apache website.

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