SB2026061303 - Denial of service in protobuf.js

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Main Vulnerability Database SB2026061303

SB2026061303 - Denial of service in protobuf.js

Published: June 13, 2026

Security Bulletin ID SB2026061303
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) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-54270)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

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 allocation of resources without limits or throttling in unknown field retention during binary decode when processing attacker-controlled protobuf binary data. A remote attacker can send a crafted protobuf payload with many unknown fields to cause a denial of service.

Exploitation requires the application to decode untrusted protobuf binary input, treat attacker-selected field numbers as unknown, and retain decoded messages long enough for memory pressure to build.


Remediation

Install update from vendor's website.

References