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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. HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion. Support for the <template> element was added to libgumbo 0.10.0 in 2015, but the walk_tree function in lib/HTML/Gumbo.xs was not updated to support it. The element was treated as a text-node, where strlen() over-reads the heap block that the pointer addresses. Any caller that runs parse() with the default format => 'string', or with format => 'tree', on input containing a <template> element serializes the over-read bytes into the returned result, disclosing bounded heap contents. format => 'callback' reaches a croak on the unhandled node type and is unaffected.
FEDORA-2026-a457bf78b4 (perl-HTML-Gumbo-0.19-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-a457bf78b4
FEDORA-2026-75010c7f44 (perl-HTML-Gumbo-0.19-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-75010c7f44
FEDORA-2026-75010c7f44 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-2026-75010c7f44` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-75010c7f44 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-a457bf78b4 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-a457bf78b4` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a457bf78b4 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-a457bf78b4 (perl-HTML-Gumbo-0.19-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-75010c7f44 (perl-HTML-Gumbo-0.19-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.