CVE-2023-36665

Name: CVE-2023-36665
Creator: NVD / NIST
Published: 2023-07-05T14:15:09.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.42%

Last modified Jun 17, 2026

CVE-2023-36665 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. "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. EPSS estimates a 1.42% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.42%

69.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Protobufjs Project	Protobufjs	>= 6.10.0, < 7.2.5

References

https://github.com/protobufjs/protobuf.js/commit/e66379f451b0393c27d87b37fa7d271619e16b0dPatch
https://github.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.3...protobufjs-v7.2.4Patch
https://github.com/protobufjs/protobuf.js/pull/1899Patch, Vendor Advisory
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.2.4Release Notes
https://security.netapp.com/advisory/ntap-20240628-0006/
https://www.code-intelligence.com/blog/cve-protobufjs-prototype-pollution-cve-2023-36665Exploit, Patch, Third Party Advisory
https://github.com/protobufjs/protobuf.js/commit/e66379f451b0393c27d87b37fa7d271619e16b0dPatch
https://github.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.3...protobufjs-v7.2.4Patch
https://github.com/protobufjs/protobuf.js/pull/1899Patch, Vendor Advisory
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.2.4Release Notes
https://security.netapp.com/advisory/ntap-20240628-0006/
https://www.code-intelligence.com/blog/cve-protobufjs-prototype-pollution-cve-2023-36665Exploit, Patch, Third Party Advisory

Timeline

Published: Jul 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-36665?

How severe is CVE-2023-36665?

CVE-2023-36665 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.

How do I fix CVE-2023-36665?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-36665?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST