CVE-2026-44294 MEDIUM

CVE-2026-44294: protobufjs: Denial of service from crafted field names in generated code

Vendor Protobufjs
Product protobuf.js
Weakness CWE-20 · Input validation
Published May 13, 2026
Last update May 13, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript property accessors from schema-controlled field and oneof names. Certain control characters in field names were not escaped before being embedded into generated function bodies. A crafted schema or JSON descriptor could therefore cause generated encode, decode, verify, or conversion functions to fail during compilation. This vulnerability is fixed in 7.5.6 and 8.0.2.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 13, 2026 Record updated