{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59295", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-07-04T18:13:34.323Z", "datePublished": "2026-08-24T10:10:06.302Z", "dateUpdated": "2026-08-24T10:10:06.302Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-08-24T10:10:06.302Z"}, "title": "Micrometer Instrumentation of Apache HttpAsyncClient Denial of Service Vulnerability", "datePublic": "2026-08-20T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-401", "description": "CWE-401: Missing Release of Memory after Effective Lifetime", "type": "CWE"}]}], "affected": [{"vendor": "VMware (Broadcom)", "product": "io.micrometer:micrometer-core", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "1.9.18", "versionType": "semver"}, {"status": "affected", "version": "1.14.0", "lessThanOrEqual": "1.14.16", "versionType": "semver"}, {"status": "affected", "version": "1.15.0", "lessThanOrEqual": "1.15.12", "versionType": "semver"}, {"status": "affected", "version": "1.16.0", "lessThanOrEqual": "1.16.6", "versionType": "semver"}, {"status": "affected", "version": "1.17.0", "versionType": "semver"}, {"status": "unaffected", "version": "1.9.19", "versionType": "semver"}, {"status": "unaffected", "version": "1.14.17", "versionType": "semver"}, {"status": "unaffected", "version": "1.15.13", "versionType": "semver"}, {"status": "unaffected", "version": "1.16.7", "versionType": "semver"}, {"status": "unaffected", "version": "1.16.6.1", "versionType": "custom"}, {"status": "unaffected", "version": "1.17.1", "versionType": "semver"}, {"status": "unaffected", "version": "1.17.0.1", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Micrometer-instrumented Apache HttpAsyncClient (4.x or 5.x) usage via MicrometerHttpClientInterceptor can leak memory unboundedly when asynchronous requests fail before receiving a response (e.g. connection resets or timeouts). Tracking state for these requests remains in memory indefinitely, and sustained failures lead to heap exhaustion and OutOfMemoryError crashes.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Micrometer-instrumented Apache HttpAsyncClient (4.x or 5.x) usage via MicrometerHttpClientInterceptor can leak memory unboundedly when asynchronous requests fail before receiving a response (e.g. connection resets or timeouts). Tracking state for these requests remains in memory indefinitely, and sustained failures lead to heap exhaustion and OutOfMemoryError crashes.</p>"}]}], "references": [{"url": "https://spring.io/security/cve-2026-59295", "name": "Spring Security Advisory CVE-2026-59295"}, {"url": "https://github.com/spring-projects/security-advisories/security/advisories/GHSA-747c-jhq3-w433", "name": "GHSA-747c-jhq3-w433"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 5.9, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "workarounds": [{"lang": "en", "value": "Migrate to Apache HttpClient 5.6.x's native httpclient5-observation module, or use ObservationExecChainHandler when using HttpClient 5.x with Micrometer 1.12.0+.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Migrate to Apache HttpClient 5.6.x's native httpclient5-observation module, or use ObservationExecChainHandler when using HttpClient 5.x with Micrometer 1.12.0+.</p>"}]}]}}}

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