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OpenAdvisories
High RHSA-2026:71655 1 CVE

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Published Sep 25, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 3

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 expat 0:2.8.4-0.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 expat-devel 0:2.8.4-0.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 expat-static 0:2.8.4-0.2.hum1

Vulnerabilities 1

  • High 7.5
    CVE-2026-93990

    Expat before 2.8.5 Malformed UTF-16 Acceptance via Unchecked Surrogate

    Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following c…

    libexpat project libexpat python3 insighttoolkit4 Debian Ubuntu Azure Linux Alpine

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-93990
  • article
    https://access.redhat.com/security/updates/classification/
  • article
    https://images.redhat.com/
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_71655.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2538967
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-93990
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-93990
  • article
    https://github.com/libexpat/libexpat
  • article
    https://github.com/libexpat/libexpat/commit/ff6e1d7e750bbe245178f51a47a965dc8342861a
  • article
    https://github.com/libexpat/libexpat/pull/1282
  • article
    https://www.vulncheck.com/advisories/expat-through-2.8.4-malformed-utf-16-acceptance-via-unchecked-surrogate