Bug 2546315 - CVE-2026-19954 perl-Net-Whois-Raw: perl-net-whois-raw: incorrect WHOIS domain lookup via improper Unicode normalization [fedora-all]
Summary: CVE-2026-19954 perl-Net-Whois-Raw: perl-net-whois-raw: incorrect WHOIS domain...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: perl-Net-Whois-Raw
Version: rawhide
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
Assignee: Emmanuel Seyman
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["215826bf-920e-41b9-97d2-a...
Depends On:
Blocks: CVE-2026-19954
TreeView+ depends on / blocked
 
Reported: 2026-10-06 08:02 UTC by Vladimir Vasilev
Modified: 2026-10-13 03:01 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Vladimir Vasilev 2026-10-06 08:02:27 UTC
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.

Comment 1 Fedora Update System 2026-10-11 12:46:48 UTC
FEDORA-2026-c330a15c68 (perl-Net-Whois-Raw-2.99.044-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c330a15c68

Comment 2 Fedora Update System 2026-10-11 12:46:50 UTC
FEDORA-2026-535e7d2281 (perl-Net-Whois-Raw-2.99.044-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-535e7d2281

Comment 3 Fedora Update System 2026-10-13 01:57:22 UTC
FEDORA-2026-535e7d2281 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-535e7d2281`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-535e7d2281

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-10-13 02:31:52 UTC
FEDORA-2026-78d9d79627 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-78d9d79627`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-78d9d79627

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-10-13 03:01:44 UTC
FEDORA-2026-c330a15c68 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c330a15c68`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c330a15c68

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.


Note You need to log in before you can comment on or make changes to this bug.