libnet-whois-raw-perl: Net::Whois::Raw versions before 2.99044 for Perl ship a pwhois command-line tool that queries WHOIS for the wrong dom...
CVE-2026-19954 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-19954, released October 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libnet-whois-raw-perl · Debian 14 | 2.99043-2 | DEBIAN-CVE-2026-19954 | Oct 10, 2026 |
| perl-Net-Whois-Raw · Fedora 43 | 2.99.044-1.fc43 | FEDORA-2026-C330A15C68 | Nov 7, 2026 |
| pwhois · Fedora 43 | 2.99.044-1.fc43 | FEDORA-2026-C330A15C68 | Nov 7, 2026 |
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