CVE-2026-34520

low Red Hat
CVSS v3 Base Score
3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Published: April 1, 2026 (42 days ago)
Last Modified: April 1, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in AIOHTTP, an asynchronous HTTP client/server framework for Python. The default C parser incorrectly processed null bytes and control characters present in HTTP response headers. This vulnerability could allow a remote attacker to inject malicious data into these headers, potentially leading to unexpected application behavior or security bypasses.

CWE

CWE-1286

Affected Products

Lightspeed CoreOpenShift LightspeedRed Hat AI Inference ServerRed Hat Ansible Automation Platform 2Red Hat Ansible Automation Platform Ansible Core 2Red Hat Enterprise Linux AI (RHEL AI) 3Red Hat OpenShift AI (RHOAI)Red Hat Satellite 6

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com