TI-2022-13369 Aliases CVE-2022-31394 GHSA-x477-xp89-wc9r

Hyperium Hyper before 0.14.19 does not allow for customization of the…

HIGH 72CWE-770Published 2023-02-21 · Updated 2025-03-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01076 65th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:hyper:hyper::::::rust::*	before 0.14.19	Vulnerable	hyperium

cpe:2.3:a:hyper:hyper:*:*:*:*:*:rust:*:* Versions before 0.14.19 Vulnerable ·hyperium

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-31394
2026-10-03 Alias added: GHSA-x477-xp89-wc9r

References

Exploit 1

https://github.com/hyperium/hyper/issues/2826

Patch 2

TI-2023-11846 An issue was discovered in hyper v0.13.7. CVSS 3.1HIGH 7.5
TI-2020-18306 An issue was discovered in the hyper crate before 0.12.34 for Rust. CVSS 3.1CRITICAL 9.8
TI-2021-04399 Multiple Transfer-Encoding headers misinterprets request payload CVSS 3.1HIGH 8.1
TI-2021-12382 Integer Overflow in Chunked Transfer-Encoding CVSS 3.1CRITICAL 9.1
TI-2021-12383 Lenient Parsing of Content-Length Header When Prefixed with Plus Sign CVSS 3.1MEDIUM 5.3
TI-2017-13760 An issue was discovered in the hyper crate before 0.9.18 for Rust. CVSS 3.0MEDIUM 5.3

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences