CVE-2026-45740

HighCVSS 7.5/10Last modified Nov 11, 2026

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace definitions could cause the JavaScript call stack to be exhausted during descriptor loading. This vulnerability is fixed in 7.5.8 and 8.2.0.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-674

Affected software

Vendor	Product	Versions
protobufjs	protobuf.js	< 7.5.8; >= 8.0.0, < 8.2.0

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jggg-4jg4-v7c6Mitigation, Vendor Advisory

Timeline

Published: May 13, 2026
Last modified: Nov 11, 2026
NVD status: Analyzed

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