# Duplicate Advisory: rust-protobuf crate is vulnerable to Uncontrolled Recursion, potentially leading to DoS

Source: https://junglewise.ai/threats/duplicate-advisory-rust-protobuf-crate-is-vulnerable-to-uncontrolled-13c4f534  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-07-05  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2025-07-05

Duplicate Advisory: rust-protobuf crate is vulnerable to Uncontrolled Recursion, potentially leading to DoS

Technologies: [protobuf (crates.io)](https://junglewise.ai/threats/technologies/crates-io-protobuf). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 5 July 2025.

**Which products and versions are affected?** protobuf (crates.io) SEMVER:introduced=0,fixed=3.7.2.

**Is there a fix for This vulnerability?** Yes. protobuf (crates.io): upgrade to 3.7.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run protobuf (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- protobuf (crates.io): upgrade to 3.7.2 or later

  ```sh
  cargo update -p protobuf
  ```


## Affected products

- protobuf (crates.io) SEMVER:introduced=0,fixed=3.7.2

## Related threats

- [RUSTSEC-2024-0437 - Crash due to uncontrolled recursion in protobuf crate](https://junglewise.ai/threats/cve-2025-53605-crash-due-to-uncontrolled-recursion-in-protobuf-crate)
- [RUSTSEC-2019-0003 - Out of Memory in stream::read_raw_bytes_into()](https://junglewise.ai/threats/cve-2019-15544-uncontrolled-memory-consumption-in-protobuf)