CVE-2026-59323

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-59323", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-21T12:03:29.254669Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770 Allocation of Resources Without Limits or Throttling"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-21T12:03:45.230Z"}}], "cna": {"title": "Micrometer Tracing Brave Bridge W3C Baggage propagation DoS vulnerability", "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "VMware", "product": "Spring", "versions": [{"status": "affected", "version": "1.7.0 - 1.7.0", "lessThan": "1.7.0.1", "versionType": "Enterprise Support Only"}, {"status": "affected", "version": "1.7.0 - 1.7.0", "lessThan": "1.7.1", "versionType": "OSS"}, {"status": "affected", "version": "1.6.0 - 1.6.6", "lessThan": "1.6.6.1", "versionType": "enterprise support only"}, {"status": "affected", "version": "1.6.0 - 1.6.6", "lessThan": "1.6.7", "versionType": "oss"}, {"status": "affected", "version": "1.5.0 - 1.5.12", "lessThan": "1.5.13", "versionType": "enterprise support only"}, {"status": "affected", "version": "1.4.13 and earlier", "lessThan": "1.4.14", "versionType": "enterprise support only"}], "packageName": "Micrometer Tracing", "defaultStatus": "affected"}], "datePublic": "2026-08-20T09:55:00.000Z", "references": [{"url": "https://spring.io/security/cve-2026-59323"}], "x_generator": {"engine": "Vulnogram 1.0.4"}, "descriptions": [{"lang": "en", "value": "An application using Micrometer Tracing with W3C baggage propagation in the Brave bridge is vulnerable to denial of service (DoS) due to unbounded object allocation when extracting incoming\u00a0baggage\u00a0headers.\n\n\n\nSpecifically, an application is vulnerable when all the following are true:\n\n * The application uses a vulnerable version of\u00a0io.micrometer:micrometer-tracing-bridge-brave.\n * W3C propagation is active (either configured manually or active by default, such as in Spring Boot 3.x+).\n * Baggage propagation is enabled (which is the default in Spring Boot 3.x+) and a baggage manager (such as\u00a0BraveBaggageManager) is configured to handle baggage fields.\n * The application processes requests or messages from untrusted sources with\u00a0baggage\u00a0headers which it normally should not, see:\u00a0 https://www.w3.org/TR/trace-context/#security-considerations .\n * Network components including the (HTTP) server that receives the request do not limit the header size or the limit is high enough to cause issues.\n\n\n\n\nThe last two points are very important: normally this should not affect applications because they should not receive untrusted and unlimited input for baggage.\n\n * The application processes requests or messages from untrusted sources with\u00a0baggage\u00a0headers.\n\n\n\n\nWhen extracting baggage from the W3C\u00a0baggage\u00a0header, incoming entries are parsed without enforcing limits on the number of entries or header size as mandated by the W3C Baggage specification. An attacker can send requests or messages with artificially inflated\u00a0baggage\u00a0headers containing many key-value pairs, causing unconditional\u00a0BaggageField\u00a0allocations per entry. This leads to garbage collection pressure, high CPU usage, and potential application crash via\u00a0OutOfMemoryError.", "supportingMedia": [{"type": "text/html", "value": "<p>An application using Micrometer Tracing with W3C baggage propagation in the Brave bridge is vulnerable to denial of service (DoS) due to unbounded object allocation when extracting incoming&nbsp;<code>baggage</code>&nbsp;headers.</p><p>Specifically, an application is vulnerable when all the following are true:</p><ul><li>The application uses a vulnerable version of&nbsp;<code>io.micrometer:micrometer-tracing-bridge-brave</code>.</li><li>W3C propagation is active (either configured manually or active by default, such as in Spring Boot 3.x+).</li><li>Baggage propagation is enabled (which is the default in Spring Boot 3.x+) and a baggage manager (such as&nbsp;<code>BraveBaggageManager</code>) is configured to handle baggage fields.</li><li>The application processes requests or messages from untrusted sources with&nbsp;<code>baggage</code>&nbsp;headers which it normally should not, see:&nbsp;<a href=\"https://www.w3.org/TR/trace-context/#security-considerations\">https://www.w3.org/TR/trace-context/#security-considerations</a>.</li><li>Network components including the (HTTP) server that receives the request do not limit the header size or the limit is high enough to cause issues.</li></ul><p>The last two points are very important: normally this should not affect applications because they should not receive untrusted and unlimited input for baggage.</p><ul><li>The application processes requests or messages from untrusted sources with&nbsp;<code>baggage</code>&nbsp;headers.</li></ul><p>When extracting baggage from the W3C&nbsp;<code>baggage</code>&nbsp;header, incoming entries are parsed without enforcing limits on the number of entries or header size as mandated by the W3C Baggage specification. An attacker can send requests or messages with artificially inflated&nbsp;<code>baggage</code>&nbsp;headers containing many key-value pairs, causing unconditional&nbsp;<code>BaggageField</code>&nbsp;allocations per entry. This leads to garbage collection pressure, high CPU usage, and potential application crash via&nbsp;<code>OutOfMemoryError</code>.</p>", "base64": false}]}], "providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-08-21T10:01:05.831Z"}}}, "cveMetadata": {"cveId": "CVE-2026-59323", "state": "PUBLISHED", "dateUpdated": "2026-08-21T16:44:48.719Z", "dateReserved": "2026-07-04T18:14:10.167Z", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "datePublished": "2026-08-21T10:01:05.831Z", "assignerShortName": "vmware"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Micrometer Tracing", "vendor": "Spring", "versions": [{"status": "affected", "version": "1.7.0", "versionType": "custom"}, {"lessThanOrEqual": "1.6.6", "status": "affected", "version": "1.6.0", "versionType": "custom"}, {"lessThanOrEqual": "1.5.12", "status": "affected", "version": "1.5.0", "versionType": "custom"}, {"lessThanOrEqual": "1.4.13", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "security@vmware.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An application using Micrometer Tracing with W3C baggage propagation in the Brave bridge is vulnerable to denial of service (DoS) due to unbounded object allocation when extracting incoming baggage headers.\nMicrometer Tracing 1.7.0\nMicrometer Tracing 1.6.0 - 1.6.6\nMicrometer Tracing 1.5.0 - 1.5.12\nMicrometer Tracing 1.4.13 and earlier"}, {"lang": "es", "value": "Una aplicaci\u00f3n que utiliza Micrometer Tracing con propagaci\u00f3n de baggage W3C en el puente Brave es vulnerable a denegaci\u00f3n de servicio (DoS) debido a la asignaci\u00f3n ilimitada de objetos al extraer los encabezados de baggage entrantes.\n\nEspec\u00edficamente, una aplicaci\u00f3n es vulnerable cuando se cumplen todas las siguientes condiciones:\n\n * La aplicaci\u00f3n utiliza una versi\u00f3n vulnerable de io.micrometer:micrometer-tracing-bridge-brave.\n * La propagaci\u00f3n W3C est\u00e1 activa (ya sea configurada manualmente o activa por defecto, como en Spring Boot 3.x+).\n * La propagaci\u00f3n de baggage est\u00e1 habilitada (lo cual es el valor por defecto en Spring Boot 3.x+) y un gestor de baggage (como BraveBaggageManager) est\u00e1 configurado para manejar los campos de baggage.\n * La aplicaci\u00f3n procesa solicitudes o mensajes de fuentes no confiables con encabezados de baggage que normalmente no deber\u00eda, ver: https://www.w3.org/TR/trace-context/#security-considerations .\n * Los componentes de red, incluido el servidor (HTTP) que recibe la solicitud, no limitan el tama\u00f1o del encabezado o el l\u00edmite es lo suficientemente alto como para causar problemas.\n\nLos dos \u00faltimos puntos son muy importantes: normalmente esto no deber\u00eda afectar a las aplicaciones porque no deber\u00edan recibir entrada no confiable e ilimitada para baggage.\n\n * La aplicaci\u00f3n procesa solicitudes o mensajes de fuentes no confiables con encabezados de baggage.\n\nAl extraer baggage del encabezado de baggage W3C, las entradas entrantes se analizan sin aplicar l\u00edmites en el n\u00famero de entradas o el tama\u00f1o del encabezado seg\u00fan lo exigido por la especificaci\u00f3n W3C Baggage. Un atacante puede enviar solicitudes o mensajes con encabezados de baggage inflados artificialmente que contienen muchos pares clave-valor, causando asignaciones incondicionales de BaggageField por entrada. Esto conduce a presi\u00f3n en la recolecci\u00f3n de basura, alto uso de CPU y un posible fallo de la aplicaci\u00f3n a trav\u00e9s de OutOfMemoryError."}], "id": "CVE-2026-59323", "lastModified": "2026-10-16T15:10:00.103", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@vmware.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59323", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-21T12:03:29.254669Z", "version": "2.0.3"}}]}, "published": "2026-08-21T10:16:38.910", "references": [{"source": "security@vmware.com", "url": "https://spring.io/security/cve-2026-59323"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

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