CVE-2025-59830

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{"affected": [{"affectedData": [{"product": "rack", "vendor": "rack", "versions": [{"status": "affected", "version": "< 2.2.18"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*", "matchCriteriaId": "737F4C76-9502-4F37-AB65-0124F1CD72BF", "versionEndExcluding": "2.2.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18."}, {"lang": "es", "value": "Rack es una interfaz modular de servidor web Ruby. Antes de la versi\u00f3n 2.2.18, Rack::QueryParser aplica su l\u00edmite de par\u00e1metros solo para los par\u00e1metros separados por '&', mientras que sigue dividiendo tanto por '&' como por ';'. Como resultado, los atacantes podr\u00edan usar separadores ';' para eludir el l\u00edmite de recuento de par\u00e1metros y enviar m\u00e1s par\u00e1metros de los previstos. Las aplicaciones o el middleware que invocan directamente a Rack::QueryParser con su configuraci\u00f3n predeterminada (sin delimitador expl\u00edcito) podr\u00edan estar expuestas a un mayor consumo de CPU y memoria. Esto puede ser explotado como un vector limitado de denegaci\u00f3n de servicio. Este problema ha sido parcheado en la versi\u00f3n 2.2.18."}], "id": "CVE-2025-59830", "lastModified": "2026-10-19T16:10:00.260", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-59830", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-09-25T16:14:17.653996Z", "version": "2.0.3"}}]}, "published": "2025-09-25T15:16:13.780", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/rack/rack/commit/54e4ffdd5affebcb0c015cc6ae74635c0831ed71"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/rack/rack/security/advisories/GHSA-625h-95r8-8xpm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters", "id": "2398167", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2398167"}, "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-400|CWE-770)", "details": ["Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.", "An unsafe default behavior in Rack::QueryParser allows bypass of the params_limit parameter count restriction when query string parameters are delimited by semicolons (;) rather than ampersands (&). The parser counts only & when enforcing the limit, while still splitting on both & and ;. As a result, an attacker can supply a crafted HTTP query using ; delimiters to exceed the intended parameter count, potentially causing performance degradation or exhaustion of resources (denial of service)."], "mitigation": {"lang": "en:us", "value": "No action is required for typical Rack applications that use the framework\u2019s default request-handling mechanisms, as these are not impacted.\nFor custom implementations or middleware that directly invoke Rack::QueryParser, administrators should:\nUse explicit delimiters: Configure QueryParser to use a specific delimiter (e.g. &) rather than accepting both & and ;.\nLimit request size and parameters: Enforce request size and parameter count limits at upstream layers (such as a web server, reverse proxy, or WAF) to prevent excessive resource consumption.\nPrefer safe APIs: Use Rack::Request or other higher-level request parsing APIs, which apply safe defaults and avoid this vulnerability."}, "name": "CVE-2025-59830", "package_state": [{"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/cluster-logging-operator-bundle", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/cluster-logging-rhel9-operator", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/eventrouter-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/fluentd-rhel8", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/fluentd-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/log-file-metric-exporter-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/logging-view-plugin-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Affected", "package_name": "openshift-logging/vector-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp21/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp22/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp24/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp25/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp26/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel7", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "ruby:2.5/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "ruby:3.3/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "pcs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "ruby:3.3/ruby", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-cinder-backup", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-cinder-volume", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-manila-share", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-mariadb", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-ovn-northd", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-rabbitmq", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "rhosp13/openstack-redis", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "rubygem-rack", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite:el8/rubygem-rack", "product_name": "Red Hat Satellite 6"}], "public_date": "2025-09-25T14:37:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-59830\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-59830\nhttps://github.com/rack/rack/commit/54e4ffdd5affebcb0c015cc6ae74635c0831ed71\nhttps://github.com/rack/rack/security/advisories/GHSA-625h-95r8-8xpm"], "statement": "The overall severity of this flaw is rated as High, as it can result in significant resource exhaustion under certain configurations.\nHowever, in practice, most Rack-based applications use Rack::Request, which invokes the parser safely. Therefore, the effective risk for typical deployments is considered Low.\nThis means that while the flaw is theoretically serious, the likelihood of real-world impact is limited to edge cases where the vulnerable component (Rack::QueryParser) is used directly.", "threat_severity": "Important"}

{"created": "2025-09-26T11:35:51.397220+00:00", "updated": "2025-09-26T11:35:51.397284+00:00", "vendors": ["rack", "rack$PRODUCT$rack"]}