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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-59877 Detail

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs parsed option names by advancing through schema tokens until reaching an = token without checking for end of input, so a crafted .proto schema that opens an option declaration and ends prematurely can cause parse, Root.load, or Root.loadSync to loop indefinitely. This issue is fixed in versions 7.6.5 and 8.6.6.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/protobufjs/protobuf.js/commit/10fba6d54815ceecca8a06b9a6db490c8f5d2217 GitHub, Inc.
https://github.com/protobufjs/protobuf.js/commit/fa5c73add738ceb471e74da8cc2f3727c3d0a69f GitHub, Inc.
https://github.com/protobufjs/protobuf.js/pull/2352 GitHub, Inc.
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.6.5 GitHub, Inc.
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.6 GitHub, Inc.
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-j3f2-48v5-ccww GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-59877
NVD Published Date:
07/08/2026
NVD Last Modified:
07/08/2026
Source:
GitHub, Inc.