CVE-2025-48866

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/owasp-modsecurity/ModSecurity/commit/3a54ccea62d3f7151bb08cb78d60c5e90b53ca2e	Patch
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r	Not Applicable
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-f82j-8pp7-cw2w	Exploit Vendor Advisory
https://github.com/owasp-modsecurity/ModSecurity/wiki/Reference-Manual-(v2.x)#sanitisearg	Product
https://lists.debian.org/debian-lts-announce/2025/06/msg00009.html	Mailing List

Configurations

Configuration 1 (hide)

cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*

History

02 Jul 2025, 18:11

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-02 16:15

Updated : 2025-07-02 18:11

NVD link : CVE-2025-48866

Mitre link : CVE-2025-48866

CVE.ORG link : CVE-2025-48866

JSON object : View

Products Affected

owasp

modsecurity

CWE

CWE-1050

Excessive Platform Resource Consumption within a Loop

{"id": "CVE-2025-48866", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2025-06-02T16:15:29.900", "references": [{"url": "https://github.com/owasp-modsecurity/ModSecurity/commit/3a54ccea62d3f7151bb08cb78d60c5e90b53ca2e", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r", "tags": ["Not Applicable"], "source": "security-advisories@github.com"}, {"url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-f82j-8pp7-cw2w", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/owasp-modsecurity/ModSecurity/wiki/Reference-Manual-(v2.x)#sanitisearg", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00009.html", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-1050"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "ModSecurity es un motor de firewall de aplicaciones web (WAF) multiplataforma de c\u00f3digo abierto para Apache, IIS y Nginx. Las versiones anteriores a la 2.9.10 contienen una vulnerabilidad de denegaci\u00f3n de servicio similar a GHSA-859r-vvv8-rm8r/CVE-2025-47947. La acci\u00f3n `sanitiseArg` (y `sanitizeArg`, que es la misma acci\u00f3n pero un alias) es vulnerable a a\u00f1adir un n\u00famero excesivo de argumentos, lo que provoca una denegaci\u00f3n de servicio. La versi\u00f3n 2.9.10 corrige el problema. Como workaround, evite usar reglas que contengan la acci\u00f3n `sanitiseArg` (o `sanitizeArg`)."}], "lastModified": "2025-07-02T18:11:34.663", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "60F5291C-3B49-450D-B2C5-620633BBA7EB", "versionEndExcluding": "2.9.10"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}