RHSA-2026:69108MediumCVSS 7.5

Red Hat Security Advisory: libsoup security update

Published
September 21, 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 E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-0:2.72.0-8.el9_4.12.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debuginfo-0:2.72.0-8.el9_4.12.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debuginfo-0:2.72.0-8.el9_4.12.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debuginfo-0:2.72.0-8.el9_4.12.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debuginfo-0:2.72.0-8.el9_4.12.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debuginfo-0:2.72.0-8.el9_4.12.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debugsource-0:2.72.0-8.el9_4.12.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debugsource-0:2.72.0-8.el9_4.12.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debugsource-0:2.72.0-8.el9_4.12.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debugsource-0:2.72.0-8.el9_4.12.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-debugsource-0:2.72.0-8.el9_4.12.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-devel-0:2.72.0-8.el9_4.12.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-devel-0:2.72.0-8.el9_4.12.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-devel-0:2.72.0-8.el9_4.12.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-devel-0:2.72.0-8.el9_4.12.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • libsoup-devel-0:2.72.0-8.el9_4.12.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)

✅ 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)