# RUSTSEC-2026-0344 - Decompression bomb in `ruzstd`: a tiny input can exhaust memory (OOM)

Source: https://junglewise.ai/threats/rustsec-2026-0344-decompression-bomb-in-ruzstd-a-tiny-input-can-exhaust-f23fcc27  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-11  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2026-10-11

Decompression bomb in `ruzstd`: a tiny input can exhaust memory (OOM)

Technologies: [ruzstd (crates.io)](https://junglewise.ai/threats/technologies/ruzstd). 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 11 October 2026.

**Which products and versions are affected?** ruzstd (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.9.1.

**Is there a fix for This vulnerability?** Yes. ruzstd (crates.io): upgrade to 0.9.1 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 ruzstd (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

- ruzstd (crates.io): upgrade to 0.9.1 or later

  ```sh
  cargo update -p ruzstd
  ```


## Affected products

- ruzstd (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.9.1

## Related threats

- [`ruzstd` uninit and out-of-bounds memory reads](https://junglewise.ai/threats/ruzstd-uninit-and-out-of-bounds-memory-reads-2cefac4e)
- [RUSTSEC-2024-0400 - `ruzstd` uninit and out-of-bounds memory reads](https://junglewise.ai/threats/rustsec-2024-0400-ruzstd-uninit-and-out-of-bounds-memory-reads-10d2bee5)