Critical Privilege Management Flaw in Apache HTTP Server's mod_ssl

apache2 Updated 02 Oct 2026

Summary

01/10/2026

Disclosed on

N/A

Severity

No i

Fix available

Critical

Severity

9.8

CVSS Score

DEBIAN-CVE-2026-59797: Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-related expressions. Affects apache2 versions 2.4.57-2 – 2.4.69-1. No fix is published. How to fix ↓

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Background

Apache HTTP Server is a widely-used open-source web server software that enables users to serve web content. It is known for its flexibility, power, and extensive feature set, including support for various protocols and modules. The mod_ssl module provides SSL and TLS support, allowing secure communications over the internet. However, a recent vulnerability has been identified in mod_ssl, affecting versions from 2.4.0 through 2.4.68, which could lead to improper privilege management.

Vulnerability Detail

The vulnerability, identified as CVE-2026-59797, arises from improper privilege management within the mod_ssl module of Apache HTTP Server. Specifically, it involves the SSLRequire directive and file-related expressions that can be exploited to bypass intended access controls. This flaw could allow unauthorized users to gain access to sensitive resources, potentially leading to data exposure or unauthorized actions within the server environment. The CVSS score for this vulnerability is 9.8, indicating a critical severity level.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

If an immediate update is not feasible, a temporary workaround involves reviewing and modifying the SSLRequire directives and file-related expressions to ensure they do not inadvertently grant access to unauthorized users. This may include restricting access to sensitive files and directories through proper configuration.

Conclusion

The CVE-2026-59797 vulnerability in Apache HTTP Server's mod_ssl poses a significant risk due to improper privilege management. It is crucial for users to update to the latest version to mitigate this risk. For those unable to update immediately, reviewing access controls can serve as a temporary measure.

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