CVE-2026-54276

Updated on 15 Jun 2026

Severity

Awaiting Analysis

Details

Overview

About vulnerability

Summary

DigestAuthMiddleware can send an authentication response after following a cross-origin redirect.

Impact

If the client follows a redirect (the default option) to an attacker controlled domain, the attacker may be able to extract the auth digest.

This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user’s credentials if the cryptography is weak or there is some kind of password reuse.

Workaround

Disable follow_redirects if this is a concern.


Patch: https://github.com/aio-libs/aiohttp/commit/38d16060037e1bfcd6d677abababa3c2a4bb58fa

Details

Affected packages:
aiohttp @ 3.10.11 (+5 more)

Summary

DigestAuthMiddleware can send an authentication response after following a cross-origin redirect.

Impact

If the client follows a redirect (the default option) to an attacker controlled domain, the attacker may be able to extract the auth digest.

This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user’s credentials if the cryptography is weak or there is some kind of password reuse.

Workaround

Disable follow_redirects if this is a concern.


Patch: https://github.com/aio-libs/aiohttp/commit/38d16060037e1bfcd6d677abababa3c2a4bb58fa