CVE-2026-15709: Soupwebsocketextensiondeflate: libsoup: libsoup: websocket permessage-deflate unbounded decompression remote denial of service

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-07-17

Last Updated

2026-09-24

EPSS Score

0.88% (percentile: 58.4%)

Affected Products (2)

Other

• 21478-17084
• 21895-17084

Revision History

• 2026-07-17: Information published.
• 2026-09-09: Information published.
• 2026-09-23: Information published.
• 2026-09-24: Information published.
• 2026-09-24: Information published.