CVE-2026-59295 (GCVE-0-2026-59295)
Vulnerability from cvelistv5 – Published: 2026-08-24 10:10 – Updated: 2026-08-27 17:57
VLAI
EPSS
VEX
Title
Micrometer instrumentation of Apache HttpAsyncClient DoS vulnerability
Summary
It is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak.
Micrometer 1.17.0
Micrometer 1.16.0 - 1.16.6
Micrometer 1.15.0 - 1.15.12
Micrometer 1.14.0 - 1.14.16
Micrometer 1.9.18 and earlier
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 14:28 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Spring | Micrometer |
Affected:
1.17.0
(custom)
Affected: 1.16.0 , ≤ 1.16.6 (custom) Affected: 1.15.0 , ≤ 1.15.12 (custom) Affected: 1.14.0 , ≤ 1.14.16 (custom) Affected: 0 , ≤ 1.9.18 (custom) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-59295",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T14:28:32.372143Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-24T14:28:42.575Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Micrometer",
"vendor": "Spring",
"versions": [
{
"status": "affected",
"version": "1.17.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.16.6",
"status": "affected",
"version": "1.16.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.15.12",
"status": "affected",
"version": "1.15.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.14.16",
"status": "affected",
"version": "1.14.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.9.18",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIt is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak.\u003c/p\u003e\u003cp\u003eMicrometer 1.17.0\u003cbr/\u003eMicrometer 1.16.0 - 1.16.6\u003cbr/\u003eMicrometer 1.15.0 - 1.15.12\u003cbr/\u003eMicrometer 1.14.0 - 1.14.16\u003cbr/\u003eMicrometer 1.9.18 and earlier\u003c/p\u003e"
}
],
"value": "It is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak.\nMicrometer 1.17.0\nMicrometer 1.16.0 - 1.16.6\nMicrometer 1.15.0 - 1.15.12\nMicrometer 1.14.0 - 1.14.16\nMicrometer 1.9.18 and earlier"
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "It is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak."
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-401 Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T17:57:52.554Z",
"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"shortName": "vmware"
},
"references": [
{
"url": "https://spring.io/security/cve-2026-59295"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Micrometer instrumentation of Apache HttpAsyncClient DoS vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"assignerShortName": "vmware",
"cveId": "CVE-2026-59295",
"datePublished": "2026-08-24T10:10:06.302Z",
"dateReserved": "2026-07-04T18:13:34.323Z",
"dateUpdated": "2026-08-27T17:57:52.554Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-59295",
"date": "2026-09-19",
"epss": "0.00222",
"percentile": "0.13104"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Micrometer",
"vendor": "Spring",
"versions": [
{
"status": "affected",
"version": "1.17.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.16.6",
"status": "affected",
"version": "1.16.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.15.12",
"status": "affected",
"version": "1.15.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.14.16",
"status": "affected",
"version": "1.14.0",
"versionType": "custom"
},
{
"lessThanOrEqual": "1.9.18",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "security@vmware.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "It is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak.\nMicrometer 1.17.0\nMicrometer 1.16.0 - 1.16.6\nMicrometer 1.15.0 - 1.15.12\nMicrometer 1.14.0 - 1.14.16\nMicrometer 1.9.18 and earlier"
}
],
"id": "CVE-2026-59295",
"lastModified": "2026-08-28T18:47:30.163",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "security@vmware.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-59295",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T14:28:32.372143Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-24T11:16:39.780",
"references": [
{
"source": "security@vmware.com",
"url": "https://spring.io/security/cve-2026-59295"
}
],
"sourceIdentifier": "security@vmware.com",
"vulnStatus": "Awaiting Analysis"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-27T00:26:00+00:00",
"cve": "CVE-2026-59295",
"id": "CVE-2026-59295",
"initial_release_date": "2026-08-24T10:10:06.302000+00:00",
"product_status:known_affected": "2",
"product_status:known_not_affected": "21",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "io.micrometer/micrometer-core: Micrometer Instrumentation for Apache HttpAsyncClient: Denial of Service via asynchronous request failures",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59295.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-59295",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T14:28:32.372143Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-24T14:28:39.220Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "io.micrometer:micrometer-core",
"vendor": "VMware (Broadcom)",
"versions": [
{
"lessThanOrEqual": "1.9.18",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.14.16",
"status": "affected",
"version": "1.14.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.15.12",
"status": "affected",
"version": "1.15.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.16.6",
"status": "affected",
"version": "1.16.0",
"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"
}
]
}
],
"datePublic": "2026-08-20T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eMicrometer-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.\u003c/p\u003e"
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-401",
"description": "CWE-401: Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-24T10:10:06.302Z",
"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"shortName": "vmware"
},
"references": [
{
"name": "Spring Security Advisory CVE-2026-59295",
"url": "https://spring.io/security/cve-2026-59295"
},
{
"name": "GHSA-747c-jhq3-w433",
"url": "https://github.com/spring-projects/security-advisories/security/advisories/GHSA-747c-jhq3-w433"
}
],
"title": "Micrometer Instrumentation of Apache HttpAsyncClient Denial of Service Vulnerability",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eMigrate to Apache HttpClient 5.6.x\u0027s native httpclient5-observation module, or use ObservationExecChainHandler when using HttpClient 5.x with Micrometer 1.12.0+.\u003c/p\u003e"
}
],
"value": "Migrate to Apache HttpClient 5.6.x\u0027s native httpclient5-observation module, or use ObservationExecChainHandler when using HttpClient 5.x with Micrometer 1.12.0+."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"assignerShortName": "vmware",
"cveId": "CVE-2026-59295",
"datePublished": "2026-08-24T10:10:06.302Z",
"dateReserved": "2026-07-04T18:13:34.323Z",
"dateUpdated": "2026-08-24T14:28:42.575Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…