CVE-2026-5758

MEDIUM

Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution

Title source: cna
STIX 2.1

Description

JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.

References (2)

Core 2

Scores

CVSS v3 6.5
EPSS 0.0006
EPSS Percentile 17.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

Status published
Products (2)
Mafintosh/Protocol-buffers-schema parser 3.6.0 - 3.6.1
npm/protocol-buffers-schema 0 - 3.6.1npm
Published Apr 15, 2026
Tracked Since Apr 15, 2026