RHSA-2026:55432HighCVSS 7.5

Red Hat Security Advisory: curl security update

Published
August 17, 2026
Last Modified
August 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-8927 →

📋 Description

CVE-2026-8927 — curl: Information disclosure due to uncleared proxy authentication state

🎯 Affected products51

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-0:8.12.1-4.el10_2.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debuginfo-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • curl-debugsource-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-0:8.12.1-4.el10_2.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-0:8.12.1-4.el10_2.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-debuginfo-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libcurl-debuginfo-0:8.12.1-4.el10_2.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libcurl-debuginfo-0:8.12.1-4.el10_2.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • +21 more not shown

✅ 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: To mitigate this issue, applications utilizing libcurl should avoid reusing handles when switching between different proxy configurations. This operational control prevents the unintended leakage of `Proxy-Authorization` headers to incorrect proxies.

🔗 References (4)