Cross-Origin Redirect Vulnerability in AIOHTTP Framework by aio-libs
CVE-2026-54276

6.3MEDIUM

Key Information:

Vendor

Aio-libs

Status
Aiohttp
Vendor
CVE Published:
22 June 2026

What is CVE-2026-54276?

AIOHTTP, an asynchronous HTTP client/server framework for Python, has a vulnerability in the DigestAuthMiddleware that can lead to the exposure of user credentials. This occurs when following a cross-origin redirect, potentially allowing an attacker to initiate the process if there is an open redirect vulnerability in the target domain. The issue is particularly concerning if the cryptography used for authentication is weak or if users are reusing passwords. The vulnerability has been addressed in version 3.14.1.

Affected Version(s)

aiohttp < 3.14.1

References

https://github.com/aio-libs/aiohttp/security/advisories/G...
x_refsource_CONFIRM
https://github.com/aio-libs/aiohttp/commit/38d16060037e1b...
x_refsource_MISC

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.