CVE-2026-79787 Alluxio through 2.9.5 S3 REST Proxy Authentication Bypass via Unverified Request Signature

Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read,...

CVE-2026-79787

CVE-2026-79787 affects Alluxio through 2.9.5 in its S3 REST Proxy component. In the default configuration, the proxy fails to verify AWS Signature Version 4 request signatures, allowing unauthenticated network attackers to extract usernames from unsigned Authorization headers and impersonate any ...

EUVD-2026-65699

Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read,...