CVE-2026-48712

protobufjs: Denial of service through unbounded Any expansion during JSON conversion

State: Published
Severity: 7.5 High
Published: Jun 22, 2026
Updated: Jun 23, 2026
Reserved: May 22, 2026

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.1 and 8.4.1, protobufjs could recurse without a depth limit while converting decoded messages to plain objects or JSON. This affected generated toObject() conversion and the custom google.protobuf.Any JSON conversion path. A crafted protobuf binary payload containing deeply nested Any values could cause the JavaScript call stack to be exhausted during conversion to JSON. This vulnerability is fixed in 7.6.1 and 8.4.1.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
protobuf.jsprotobufjs	< 7.6.1Affected >= 8.0.0, < 8.4.1Affected

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-wcpc-wj8m-hjx6

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