CVE-2026-5758
Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution
6.5
MEDIUM
CVSS 3.1
EPSS 0.06%
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.
How to fix CVE-2026-5758
To remediate CVE-2026-5758, upgrade the affected package to a fixed version below.
- —upgrade to 3.6.1 or later
Is CVE-2026-5758 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |