Description
Uncontrolled recursion in MessagePack\BufferUnpacker::unpack() in rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service through memory exhaustion when an application decodes deeply nested, attacker-controlled MessagePack input.
Published: 2026-10-28
Score: 7.5 High
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

Fri, 30 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Title Uncontrolled Recursion in rybakit/msgpack PHP Library Leads to Denial of Service

Fri, 30 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
Title Denial of Service via Uncontrolled Recursion in MessagePack Unpacker
Weaknesses CWE-789

Fri, 30 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-674
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 Uncontrolled Recursion in MessagePack Unpacker
Weaknesses CWE-789

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

Type Values Removed Values Added
Title Uncontrolled Recursion in MessagePack BufferUnpacker Causes DoS
Weaknesses CWE-674

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

Type Values Removed Values Added
Description An uncontrolled recursion in the MessagePack\BufferUnpacker::unpack() component of rybakit/msgpack v0.11.0 allows attackers to cause a Denial of Service (DoS) via a crafted input. Uncontrolled recursion in MessagePack\BufferUnpacker::unpack() in rybakit/msgpack versions prior to 0.11.0 allows attackers to cause a denial of service through memory exhaustion when an application decodes deeply nested, attacker-controlled MessagePack input.

Wed, 28 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
First Time appeared Rybakit
Rybakit msgpack.php
Vendors & Products Rybakit
Rybakit msgpack.php

Wed, 28 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
Title Uncontrolled Recursion in MessagePack BufferUnpacker Causes DoS
Weaknesses CWE-674

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

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

Subscriptions

Rybakit Msgpack.php
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-30T17:14:25.522Z

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

Link: CVE-2026-106972

cve-icon Vulnrichment

Updated: 2026-10-30T16:49:55.782Z

cve-icon NVD

Status : Deferred

Published: 2026-10-28T15:17:02.690

Modified: 2026-10-30T18:17:17.780

Link: CVE-2026-106972

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T22:15:14Z

Weaknesses