RHSA-2026:68234MediumCVSS 7.5

Red Hat Security Advisory: libsoup security update

Published
September 16, 2026
Last Modified
September 21, 2026

🔗 CVE IDs covered (2)

CVE-2026-15709 →CVE-2026-15711 →

📋 Description

CVE-2026-15709 — SoupWebsocketExtensionDeflate: libsoup: libsoup: WebSocket permessage-deflate Unbounded Decompression Remote Denial of Service CVE-2026-15711 — libsoup: SoupWebsocketConnection: libsoup: WebSocket remote denial of service via oversized control frame protocol violation

🎯 Affected products22

  • Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-0:2.72.0-16.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debuginfo-0:2.72.0-16.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debuginfo-0:2.72.0-16.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debuginfo-0:2.72.0-16.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debuginfo-0:2.72.0-16.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debuginfo-0:2.72.0-16.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debugsource-0:2.72.0-16.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debugsource-0:2.72.0-16.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debugsource-0:2.72.0-16.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debugsource-0:2.72.0-16.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-debugsource-0:2.72.0-16.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-devel-0:2.72.0-16.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-devel-0:2.72.0-16.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-devel-0:2.72.0-16.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-devel-0:2.72.0-16.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • libsoup-devel-0:2.72.0-16.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (5)