CVE-2026-59878 (GCVE-0-2026-59878)
Vulnerability from cvelistv5 – Published: 2026-07-28 13:33 – Updated: 2026-07-28 14:05
VLAI
EPSS
VEX
Title
Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoS
Summary
Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.
A remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.
This issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.
Users are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 14:04 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache ActiveMQ AMQP |
Affected:
0 , < 5.19.9
(semver)
Affected: 6.0.0 , < 6.2.8 (semver) |
guessed | |
| Apache Software Foundation | Apache ActiveMQ |
Affected:
0 , < 5.19.9
(semver)
Affected: 6.0.0 , < 6.2.8 (semver) |
guessed | |
| Apache Software Foundation | Apache ActiveMQ All |
Affected:
0 , < 5.19.9
(semver)
Affected: 6.0.0 , < 6.2.8 (semver) |
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-07-28T13:37:49.195Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/07/27/7"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-59878",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-28T14:04:48.067427Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T14:05:06.447Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-amqp",
"product": "Apache ActiveMQ AMQP",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:apache-activemq",
"product": "Apache ActiveMQ",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-all",
"product": "Apache ActiveMQ All",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "zx (Jace)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.\u003c/p\u003eA remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.\u003cbr\u003e\u003cp\u003eThis issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.\u003c/p\u003e\u003cp\u003eUsers are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.\u003c/p\u003e"
}
],
"value": "Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.\n\nA remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.\nThis issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.\n\nUsers are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue."
}
],
"metrics": [
{
"other": {
"content": {
"text": "moderate"
},
"type": "Textual description of severity"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T13:33:54.909Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoS",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-59878",
"datePublished": "2026-07-28T13:33:54.909Z",
"dateReserved": "2026-07-07T16:19:11.276Z",
"dateUpdated": "2026-07-28T14:05:06.447Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-59878",
"date": "2026-09-21",
"epss": "0.00488",
"percentile": "0.40973"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-amqp",
"product": "Apache ActiveMQ AMQP",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:apache-activemq",
"product": "Apache ActiveMQ",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-all",
"product": "Apache ActiveMQ All",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
}
],
"source": "security@apache.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1ACBD165-58B9-4531-B323-ADB0655207DF",
"versionEndExcluding": "5.19.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E7D2CD6F-E7BB-413F-A08D-DAEF40EC0A25",
"versionEndExcluding": "6.2.8",
"versionStartIncluding": "6.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:apache:activemq_all:*:*:*:*:*:*:*:*",
"matchCriteriaId": "75A30E55-84D7-4452-9ADE-12F38DFAB3DD",
"versionEndExcluding": "5.19.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:apache:activemq_all:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2F393B16-C307-4ADC-A53E-A8D59C6B6D13",
"versionEndExcluding": "6.2.8",
"versionStartIncluding": "6.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:apache:activemq_amqp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C8CA289A-A6BA-4A65-B6CA-6A7EAB4AB6D9",
"versionEndExcluding": "5.19.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:apache:activemq_amqp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D5D1005D-9646-41AF-921E-7CF52B8E358C",
"versionEndExcluding": "6.2.8",
"versionStartIncluding": "6.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.\n\nA remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.\nThis issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.\n\nUsers are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue."
}
],
"id": "CVE-2026-59878",
"lastModified": "2026-08-05T18:46:44.583",
"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-59878",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-28T14:04:48.067427Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-28T14:16:38.283",
"references": [
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2026/07/27/7"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "security@apache.org",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-07-28T13:37:49.195Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/07/27/7"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-59878",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-28T14:04:48.067427Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T14:04:22.733Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-amqp",
"product": "Apache ActiveMQ AMQP",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:apache-activemq",
"product": "Apache ActiveMQ",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.activemq:activemq-all",
"product": "Apache ActiveMQ All",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "5.19.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "6.2.8",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "zx (Jace)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.\u003c/p\u003eA remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.\u003cbr\u003e\u003cp\u003eThis issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.\u003c/p\u003e\u003cp\u003eUsers are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.\u003c/p\u003e"
}
],
"value": "Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.\n\nA remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections.\nThis issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.\n\nUsers are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue."
}
],
"metrics": [
{
"other": {
"content": {
"text": "moderate"
},
"type": "Textual description of severity"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T13:33:54.909Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoS",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-59878",
"datePublished": "2026-07-28T13:33:54.909Z",
"dateReserved": "2026-07-07T16:19:11.276Z",
"dateUpdated": "2026-07-28T14:05:06.447Z",
"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…