# CVE-2022-31394: rust-hyper: Hyperium Hyper before 0.14.19 does not allow for customization of the max_header_list_size method in the H2 third-par...

CVE-2022-31394 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2022-31394, released February 21, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-31394
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0108
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 21, 2023

## Description

Hyperium Hyper before 0.14.19 does not allow for customization of the max_header_list_size method in the H2 third-party software, allowing attackers to perform HTTP2 attacks.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | aws-nitro-enclaves-cli amzn 2023 | 1.2.2-0.amzn2023 | [ALAS2023-2023-129](https://patchblox.com/security/data/fix/linux/alas2023-2023-129.md) | Mar 11, 2023 |
| Linux | aws-nitro-enclaves-cli-devel amzn 2023 | 1.2.2-0.amzn2023 | [ALAS2023-2023-129](https://patchblox.com/security/data/fix/linux/alas2023-2023-129.md) | Mar 11, 2023 |
| Linux | aws-nitro-enclaves-cli-integration-tests amzn 2023 | 1.2.2-0.amzn2023 | [ALAS2023-2023-129](https://patchblox.com/security/data/fix/linux/alas2023-2023-129.md) | Mar 11, 2023 |
| Linux | rust-hyper Debian 12.15 (bookworm) | 0.14.19-1 | [DEBIAN-CVE-2022-31394](https://patchblox.com/security/data/fix/linux/debian-cve-2022-31394.md) | Feb 21, 2023 |
| Linux | rust-hyper Debian 13.5 (trixie) | 0.14.19-1 | [DEBIAN-CVE-2022-31394](https://patchblox.com/security/data/fix/linux/debian-cve-2022-31394.md) | Feb 21, 2023 |
| Linux | rust-hyper Debian 14 | 0.14.19-1 | [DEBIAN-CVE-2022-31394](https://patchblox.com/security/data/fix/linux/debian-cve-2022-31394.md) | Feb 21, 2023 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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