CVE-2026-34519

Updated on 01 Apr 2026

Severity

2.7 Low severity

Details

CVSS score
2.7
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Overview

About vulnerability

Summary

An attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits.

Impact

In the unlikely situation that an application allows untrusted data to be used in the response’s reason parameter, then an attacker could manipulate the response to send something different from what the developer intended.


Patch: https://github.com/aio-libs/aiohttp/commit/53b35a2f8869c37a133e60bf1a82a1c01642ba2b

Details

Affected packages:
aiohttp @ 3.8.5.post7+tuxcare (+4 more)

Fixes