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CVE-2026-45740

protobufjs: Denial of Service via unbounded recursive JSON descriptor expansion

Published: May 13, 2026Updated: May 13, 2026 Sources: CVE List NVDCWE-674
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 82.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-674

Affected Products

protobuf.jsprotobufjs
Library
OSS Libraries / generic-library
protobufjsprotobufjs project
Library
OSS Libraries / generic-library
protobufjsoss-projectOSS Librariesaka protobuf.js, protobufjs
protobufjs projectoss-projectOSS Librariesaka protobufjs, protobufjs-cli

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jggg-4jg4-v7c6
github.com

Timeline

Published
May 13, 2026
Last Updated
May 13, 2026

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