SB2026061305 - Denial of service in protobuf.js and protobufjs-cli

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Main Vulnerability Database SB2026061305

SB2026061305 - Denial of service in protobuf.js and protobufjs-cli

Published: June 13, 2026

Security Bulletin ID SB2026061305
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Uncontrolled Recursion (CVE-ID: CVE-2026-54269)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled recursion in protobufjs runtime helpers when processing schema-derived names that shadow runtime-significant properties. A remote attacker can provide a crafted protobuf schema or protobufjs JSON descriptor to cause a denial of service.

Exploitation requires the application to load or use a schema or descriptor containing a problematic name and to reach the affected API path.


Remediation

Install update from vendor's website.

References