CVE-2026-107299

Published: Ott 08, 2026 Last Modified: Ott 08, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,9
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder treats the reserved MessagePack byte 0xc1 as incomplete input instead of invalid input. When 0xc1 begins a stream, subsequent data remains buffered while the decoder waits for bytes that cannot make the value valid, allowing a remote peer to exhaust memory. This issue is fixed in version 6.1.0.

228

Improper Handling of Syntactically Invalid Structure

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability
Potential Impacts:
Unexpected State Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu)
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/mcollina/msgpack5/commit/85da345bf1acc18…
https://github.com/mcollina/msgpack5/commit/85da345bf1acc18ca441741e5cf4aa0ed0d…
https://github.com/mcollina/msgpack5/releases/tag/v6.1.0
https://github.com/mcollina/msgpack5/releases/tag/v6.1.0
https://github.com/mcollina/msgpack5/security/advisories/GH…
https://github.com/mcollina/msgpack5/security/advisories/GHSA-26wq-p25c-j6fv