CRITICAL

CVE-2023-36665

CVSS v3

9.8

CRITICAL

EPSS Score

1.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

protobufjsnpmfrom 6.10.0 · fixed in 6.11.4

Vendor advisories

CVE-2023-36665 Red Hat Product Security19 known affected
protobufjs: prototype pollution using user-controlled protobuf message
grafana as a component of Red Hat Enterprise Linux 8 · grafana-azure-monitor as a component of Red Hat Enterprise Linux 8 · grafana-cloudwatch as a component of Red Hat Enterprise Linux 8

Full record on NVD

Description

"protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.5 allows Prototype Pollution, a different vulnerability than CVE-2022-25878. A user-controlled protobuf message can be used by an attacker to pollute the prototype of Object.prototype by adding and overwriting its data and functions. Exploitation can involve: (1) using the function parse to parse protobuf messages on the fly, (2) loading .proto files by using load/loadSync functions, or (3) providing untrusted input to the functions ReflectionObject.setParsedOption and util.setProperty.

Technical details

Published: 2023-07-05

Frequently asked questions

What is CVE-2023-36665?

Is CVE-2023-36665 actively exploited?

Active exploitation of CVE-2023-36665 has not been confirmed. Its EPSS score was 1.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-36665?

CVE-2023-36665 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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