VULNERABILITY INTELLIGENCE
CVE-2026-79787
CVSS score9.8 CRITICAL
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-09-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
Weakness classification
- disclosure@vulncheck.com: CWE-287