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Moderate severityGHSA Advisory· Published Jun 15, 2026· Updated Jun 15, 2026

aiohttp: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges

CVE-2026-54276

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
aiohttpPyPI
< 3.14.13.14.1

Affected products

30

Patches

Vulnerability mechanics

References

3

News mentions

1