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Medium RHSA-2026:84587 1 CVE

Red Hat Security Advisory: perl-URI security update

Published Oct 19, 2026 · Updated Oct 20, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · RHEL 10 enterprise_linux:10.2 perl-URI 0:5.27-3.el10_2.1

Vulnerabilities 1

  • Medium 6.5
    CVE-2026-19953

    URI versions before 5.36 for Perl encode non-NFC host names to non-standard punycode labels via missing normalization in nameprep

    URI versions before 5.36 for Perl encode non-NFC host names to non-standard punycode labels via missing normalization in nameprep. nameprep lowercases each host label but performs no Unicode normalization. IDNA requires a label to be normalized to Form C befo…

    liburi-perl liburi-perl perl-URI Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2526492
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_84587.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-19953
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-19953
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-19953
  • article
    http://www.openwall.com/lists/oss-security/2026/08/31/14
  • article
    https://github.com/libwww-perl/URI/commit/956619a9e94f86d8d2c529b4e06a3674c54a73e7.patch
  • article
    https://github.com/libwww-perl/URI/pull/191
  • article
    https://metacpan.org/release/OALDERS/URI-5.36/changes
  • article
    https://www.rfc-editor.org/rfc/rfc5891#section-5.2