CVE-2026-66339: Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization header in connect tunnels

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-08-07

EPSS Score

0.23% (percentile: 13.6%)

Affected Products (1)

Other

• 21478-17084

Revision History

• 2026-08-07: Information published.