CVE-2026-67551

pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issue affects Apache Qpid Proton-Dotnet: through 1.0.0. Users are recommended to upgrade to version 1.1.0, which fixes the issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/o566fhkrr3gg0lyzt24xwvz9w94oo6ro	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/04/22	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:qpid_proton-dotnet:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-05 06:16

Updated : 2026-08-07 20:43

NVD link : CVE-2026-67551

Mitre link : CVE-2026-67551

CVE.ORG link : CVE-2026-67551

JSON object : View

Products Affected

apache

qpid_proton-dotnet

CWE

CWE-789

Memory Allocation with Excessive Size Value

{"id": "CVE-2026-67551", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-67551", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-06T15:04:09.455470Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache Qpid Proton Dotnet", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.0.0"}], "packageName": "org.apache.qpid", "defaultStatus": "unaffected"}]}], "published": "2026-08-05T06:16:39.313", "references": [{"url": "https://lists.apache.org/thread/o566fhkrr3gg0lyzt24xwvz9w94oo6ro", "tags": ["Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/08/04/22", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-789"}]}], "descriptions": [{"lang": "en", "value": "pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service.\n\nThis issue affects Apache Qpid Proton-Dotnet: through 1.0.0.\n\nUsers are recommended to upgrade to version 1.1.0, which fixes the issue."}], "lastModified": "2026-08-07T20:43:29.637", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:qpid_proton-dotnet:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F20B507-AC5D-4A2E-AC99-C7938B1C1C24", "versionEndExcluding": "1.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}