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OpenAdvisories
Critical RHSA-2026:69126 2 CVEs

Red Hat Security Advisory: curl security update

Published Sep 22, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 15

ReleasePackageFixed in
Red Hat · RHEL 9 enterprise_linux:9::appstream curl-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::appstream curl-debugsource 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::appstream curl-minimal-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::appstream libcurl-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::appstream libcurl-devel 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::appstream libcurl-minimal-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos curl 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos curl-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos curl-debugsource 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos curl-minimal 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos curl-minimal-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos libcurl 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos libcurl-debuginfo 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos libcurl-minimal 0:7.76.1-40.el9_8.7
Red Hat · RHEL 9 enterprise_linux:9::baseos libcurl-minimal-debuginfo 0:7.76.1-40.el9_8.7

Vulnerabilities 2

  • Critical 9.1
    CVE-2026-8927

    env-set cross-proxy Digest auth state leak

    When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against `proxyA` using Diges…

    curl curl curl curl Debian Ubuntu Azure Linux Alpine
  • Medium 6.5
    CVE-2026-8458

    wrong reuse for different services

    libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing c…

    curl curl curl curl Debian Ubuntu Azure Linux Alpine

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2496764
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2496769
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_69126.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-8458
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-8458
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-8458
  • article
    https://curl.se/docs/CVE-2026-8458.html
  • article
    https://curl.se/docs/CVE-2026-8458.json
  • article
    https://hackerone.com/reports/3721183
  • report
    https://access.redhat.com/security/cve/CVE-2026-8927
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-8927
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-8927
  • article
    https://curl.se/docs/CVE-2026-8927.html
  • article
    https://curl.se/docs/CVE-2026-8927.json
  • article
    https://hackerone.com/reports/3744543