Description
An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service via crafted MessagePack input when the application runs on 32-bit PHP
Published: 2026-10-28
Score: n/a
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 03 Nov 2026 17:15:00 +0000

Type Values Removed Values Added
Title Integer Overflow in MessagePack BufferUnpacker Leads to Denial of Service on 32‑bit PHP

Tue, 03 Nov 2026 15:15:00 +0000

Type Values Removed Values Added
Title Denial of Service via Integer Overflow in MessagePack BufferUnpacker on 32-bit PHP
Weaknesses CWE-680

Tue, 03 Nov 2026 13:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-190
CWE-400
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via Integer Overflow in MessagePack BufferUnpacker on 32-bit PHP
Weaknesses CWE-680

Thu, 29 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Title Integer overflow in MessagePack BufferUnpacker causes Denial of Service
Weaknesses CWE-190

Thu, 29 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack v0.11.0 allows attackers to cause a Denial of Service (DoS) via a crafted input. An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service via crafted MessagePack input when the application runs on 32-bit PHP

Wed, 28 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Title Integer overflow in MessagePack BufferUnpacker causes Denial of Service
Weaknesses CWE-190

Wed, 28 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Description An integer overflow in the MessagePack\BufferUnpacker component of rybakit/msgpack v0.11.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-03T12:26:13.361Z

Reserved: 2026-10-07T00:00:00.000Z

Link: CVE-2026-106971

cve-icon Vulnrichment

Updated: 2026-11-03T12:25:09.574Z

cve-icon NVD

Status : Deferred

Published: 2026-10-28T15:17:02.553

Modified: 2026-11-03T13:17:16.970

Link: CVE-2026-106971

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T17:00:16Z

Weaknesses