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Tornado versions before 6.5.6 contain a credential-disclosure vulnerability in SimpleAsyncHTTPClient redirect handling. The client shallow-copies redirected requests and removes only the Host header, retaining Authorization, auth_username, auth_password, and auth_mode even when the redirect changes the scheme, host, or port. When redirects are followed, authentication information intended for the original origin can consequently be forwarded to a different origin. Redirect following is enabled by default. Tornado 6.5.6 fixes the issue.
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A credential-disclosure vulnerability in Tornado's SimpleAsyncHTTPClient before version 6.5.6. Redirected requests retain authorization headers and authentication settings even when the scheme, host, or port changes, potentially exposing credentials to another destination. The reference rates the vulnerability High, with a CVSS v3 base score of 7.7.
A vulnerability affecting the python3-tornado package on Miracle Linux 9. The content supplies CVSS vectors indicating network attackability, low attack complexity, required low privileges, no user interaction, scope change, and high confidentiality impact.
A network-accessible vulnerability affecting the python3-tornado package on AlmaLinux 9. Successful exploitation requires low privileges and can result in high confidentiality impact across a changed security scope.
A vulnerability addressed by Alma Linux security advisory ALSA/RHSA-2026:67147, with network attack vector, low attack complexity, low privileges required, and high confidentiality impact according to the provided CVSS v3 vector.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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