Description
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the `sanitiseArg` (or `sanitizeArg`) action.
Published: 2025-06-02
Score: 7.5 High
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4212-1 modsecurity-apache security update
Debian DSA Debian DSA DSA-5940-1 modsecurity-apache security update
EUVD EUVD EUVD-2025-16670 ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the `sanitiseArg` (or `sanitizeArg`) action.
Ubuntu USN Ubuntu USN USN-7567-1 ModSecurity vulnerabilities
History

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0011}

epss

{'score': 0.0015}


Wed, 02 Jul 2025 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Owasp
Owasp modsecurity
CPEs cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*
Vendors & Products Owasp
Owasp modsecurity

Mon, 09 Jun 2025 15:45:00 +0000

Type Values Removed Values Added
References

Tue, 03 Jun 2025 02:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 02 Jun 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 02 Jun 2025 16:00:00 +0000

Type Values Removed Values Added
Description ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the `sanitiseArg` (or `sanitizeArg`) action.
Title ModSecurity has possible DoS vulnerability in sanitiseArg action
Weaknesses CWE-1050
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Owasp Modsecurity
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-06-09T15:03:29.894Z

Reserved: 2025-05-27T20:14:34.294Z

Link: CVE-2025-48866

cve-icon Vulnrichment

Updated: 2025-06-09T15:03:29.894Z

cve-icon NVD

Status : Analyzed

Published: 2025-06-02T16:15:29.900

Modified: 2025-07-02T18:11:34.663

Link: CVE-2025-48866

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-06-02T15:46:19Z

Links: CVE-2025-48866 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses