https://bugzilla.redhat.com/show_bug.cgi?id=2546315
Bug ID: 2546315
Summary: CVE-2026-19954 perl-Net-Whois-Raw: perl-net-whois-raw:
incorrect WHOIS domain lookup via improper Unicode
normalization [fedora-all]
Product: Fedora
Version: rawhide
Status: NEW
Whiteboard: {"flaws": ["215826bf-920e-41b9-97d2-a97e1bffb4a0"]}
Component: perl-Net-Whois-Raw
Keywords: Security, SecurityTracking
Severity: low
Priority: low
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
CC: [email protected], [email protected]
Blocks: 2545817 (CVE-2026-19954)
Target Milestone: ---
Classification: Fedora
Disclaimer: Community trackers are created by Red Hat Product Security team on
a best effort basis. Package maintainers are required to ascertain if the flaw
indeed affects their package, before starting the update process.
Net::Whois::Raw versions before 2.99044 for Perl ship a pwhois command-line
tool that queries WHOIS for the wrong domain for unicode domain names.
pwhois encodes each non-ASCII label directly using Net::IDN::Punycode and
prepends xn--. Apart from lowercasing ASCII and Cyrillic letters, it skips the
IDNA mapping and normalization steps, so a label with other uppercase letters,
or not in NFC, encodes to a different A-label than its IDNA form. For example,
a label of U+00C9 followed by "cole" encodes to "xn--cole-pka" rather than
"xn--cole-9oa".
The Net::Whois::Raw library modules are not affected.
Referenced Bugs:
https://bugzilla.redhat.com/show_bug.cgi?id=2545817
[Bug 2545817] CVE-2026-19954 perl-net-whois-raw: perl-net-whois-raw: incorrect
WHOIS domain lookup via improper Unicode normalization
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