CVE Database›Document archive›CVE-2025-47947

CVE-2025-47947

modsecurity: ModSecurity Has Possible DoS Vulnerability

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · May 22, 2025

Updated · October 22, 2026

Description

A flaw was found in the mod_security2 Apache2 module. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case. In stable released versions, when the payload's content type is application/json, at least one rule performs a sanitiseMatchedBytes action, a security control that automatically cleans or neutralizes specific patterns of potentially harmful data that prevents malicious input from reaching systems or sensitive information from leaking.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1050 · Excessive Platform Resource Consumption within a Loop