# RUSTSEC-2024-0332 - Degradation of service in h2 servers with CONTINUATION Flood

Source: https://junglewise.ai/threats/rustsec-2024-0332-degradation-of-service-in-h2-servers-with-21c9aaa3  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-04-03  
License: CC BY 4.0 with a link back

Severity: info · Published 2024-04-03

Degradation of service in h2 servers with CONTINUATION Flood

Technologies: [h2 (crates.io)](https://junglewise.ai/threats/technologies/crates-io-h2). 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?** Informational severity, published 3 April 2024.

**Which products and versions are affected?** h2 (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.3.26,introduced=0.4.0-0,fixed=0.4.4.

**Is there a fix for This vulnerability?** Yes. h2 (crates.io): upgrade to 0.4.4 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 h2 (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

- h2 (crates.io): upgrade to 0.4.4 or later

  ```sh
  cargo update -p h2
  ```


## Affected products

- h2 (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.3.26,introduced=0.4.0-0,fixed=0.4.4

## Related threats

- [RUSTSEC-2026-0258 - h2 unbounded empty DATA frames](https://junglewise.ai/threats/rustsec-2026-0258-h2-unbounded-empty-data-frames-5bcbe117)
- [h2 servers vulnerable to degradation of service with CONTINUATION Flood](https://junglewise.ai/threats/h2-servers-vulnerable-to-degradation-of-service-with-continuation-flood-81daddd5)
- [Resource exhaustion vulnerability in h2 may lead to Denial of Service (DoS)](https://junglewise.ai/threats/resource-exhaustion-vulnerability-in-h2-may-lead-to-denial-of-service-8e85215d)
- [RUSTSEC-2024-0003 - Resource exhaustion vulnerability in h2 may lead to Denial of Service (DoS)](https://junglewise.ai/threats/rustsec-2024-0003-resource-exhaustion-vulnerability-in-h2-may-lead-to-63dd18ca)
- [RUSTSEC-2023-0034 - Resource exhaustion vulnerability in h2 may lead to Denial of Service (DoS)](https://junglewise.ai/threats/cve-2023-26964-h2-vulnerable-to-denial-of-service)