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{"cveTags": [], "descriptions": [{"lang": "en", "value": "ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. 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`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available."}, {"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 hasta la 2.9.8 incluida son vulnerables a denegaci\u00f3n de servicio en un caso especial (en versiones estables): cuando el tipo de contenido del payload es `application/json` y existe al menos una regla que ejecuta la acci\u00f3n `sanitiseMatchedBytes`. Hay un parche disponible en la solicitud de incorporaci\u00f3n de cambios 3389 y se espera que forme parte de la versi\u00f3n 2.9.9. No se conocen workarounds."}], "id": "CVE-2025-47947", "lastModified": "2025-05-23T15:55:02.040", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-05-21T22:15:50.963", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/owasp-modsecurity/ModSecurity/pull/3389"}, {"source": "security-advisories@github.com", "url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1050"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "modsecurity: ModSecurity Has Possible DoS Vulnerability", "id": "2367903", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367903"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1050", "details": ["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."], "name": "CVE-2025-47947", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mod_security", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mod_security", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "jbcs-httpd24-mod_security", "product_name": "Red Hat JBoss Core Services"}], "public_date": "2025-05-21T22:08:31Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-47947\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-47947\nhttps://github.com/owasp-modsecurity/ModSecurity/pull/3389\nhttps://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r"], "threat_severity": "Important"}