PT-2026-94302 · Google · Google.Protobuf

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CVE-2026-89418

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Published

2026-09-17

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Updated

2026-09-24

CVSS v4.0

8.7

High

VectorAV: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
Name of the Vulnerable Software and Affected Versions google-protobuf (affected versions not specified)
Description The software contains an unbounded recursion issue when parsing unknown protobuf group fields. An attacker can send a crafted payload consisting of deeply nested START GROUP wire bytes to a Node.js service that utilizes the deserializeBinary() function. This action triggers a RangeError: Maximum call stack size exceeded, which leads to a process crash. This issue can be exploited without authentication or prior knowledge of the schema.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Uncontrolled Recursion

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Weakness Enumeration

Related Identifiers

AZL-103491
CVE-2026-89418

Affected Products

Google.Protobuf