CVE-2026-44292

[CVE catalog]

Severity

High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Published

May 13, 2026, 2:42:55 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.26% · Oct 25, 2026

A flaw was found in protobufjs, a library that compiles protobuf definitions into JavaScript functions. This vulnerability allows an attacker to manipulate the internal structure of message objects. By providing a specially crafted input, an attacker could alter the prototype of individual message instances, potentially leading to unauthorized modification of data or unexpected application behavior, thereby impacting data integrity. protobufjs: protobufjs: Data integrity impact due to prototype pollution This is an Important vulnerability where `protobufjs` can be exploited for prototype pollution on individual message instances. Applications that construct `protobufjs` messages from attacker-controlled plain objects, particularly those parsing untrusted JSON input, are susceptible to data integrity issues through manipulation of the object's prototype chain. This does not affect global prototypes but can lead to unexpected application behavior. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.