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CVE-2026-44294

protobufjs: Denial of service from crafted field names in generated code

Published: May 13, 2026Updated: May 13, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 76.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 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.

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-20

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-2pr8-phx7-x9h3
github.com

Timeline

Published
May 13, 2026
Last Updated
May 13, 2026
News mentions
1

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