GitHub Advisoryadvisory · PyPI
GHSA-hpj7-wq8m-9hgp aiohttp: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges
MEDIUM
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- Aliases
- CVE-2026-54276
- Ecosystem
- PyPI
- Packages
- aiohttp
- Severity
- Moderate
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-200, CWE-522
- Reviewed
- 2026-06-15
Affected packages
• PyPI aiohttp: < 3.14.1 → fixed in 3.14.1
Description
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.
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Patch: https://github.com/aio-libs/aiohttp/commit/38d16060037e1bfcd6d677abababa3c2a4bb58fa
Related
Alias · CVE (1)
- CVE-2026-54276 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability