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…
Published: 2026-08-25 · CVSS: 9.3 · CVSS 4.0
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, write, and delete arbitrary data.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7