CVE-2026-71192: Swift 2.18.0 to before 2.35.4, 2.36.0 to before 2.36.3, 2.37.0 to before 2.37.3, 2.38.0

Affected technology

Swift · 2.18.0 to before 2.35.4, 2.36.0 to before 2.36.3, 2.37.0 to before 2.37.3, 2.38.0
OpenStack

Description’s affected range: through 2.38.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant's private object. Vendor/CNA’s CVSS 4.0 assessment (base score 6.0/10) rates confidentiality impact as high; integrity and availability impact as none.