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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

GoogleCVE-2026-89418

protobuf-javascript (aka google-protobuf npm package): uncontrolled recursion

Google

CVE-2026-89418 · Published Sep 17, 2026 · updated Sep 18, 2026

High8.7
No fix yet
Google advisory

google-protobuf contains an unbounded recursion when parsing unknown protobuf group fields. An attacker can send a small crafted payload of deeply nested START_GROUP wire bytes to any Node.js service that calls the generated deserializeBinary() API, causing a RangeError: Maximum call stack size exceeded and crashing the process. No authentication or prior knowledge of the schema is required.

Affected versions

PackageAffectedFixed in
protobuf-javascript (aka google-protobuf npm package)
Product
<= All versionsNo fix yet
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-674

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