Insufficiently Protected Credentials Affecting aiohttp package, versions [,3.14.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-AIOHTTP-17342365
- published16 Jun 2026
- disclosed15 Jun 2026
- creditDenys Pakizh
Introduced: 15 Jun 2026
NewCVE-2026-54276 (opens in a new tab)How to fix?
Upgrade aiohttp to version 3.14.1 or higher.
Overview
Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the DigestAuthMiddleware class when authentication responses are sent after following cross-origin redirects. An attacker can obtain authentication digests by leveraging an open redirect or similar issue to redirect a client to an attacker-controlled domain.
Note: This is only exploitable if the client follows redirects to attacker-controlled domains.
Workaround
This vulnerability can be mitigated by disabling the follow_redirects option.