Fedora 42 opkssh Critical CVE-2026-34986 Denial of Service Advisory
fedora
April 22, 2026
Fix CVE-2026-34986 in bundled go-jose
Summary
OpenPubkey SSH is a tool which enables ssh to be used with OpenID Connect
allowing SSH access to be managed via identities like alice@example.com instead
of long-lived SSH keys.
Update Information:
Fix CVE-2026-34986 in bundled go-jose
Topics Covered
Change Log
* Sat Apr 11 2026 Till Hofmann
References
[ 1 ] Bug #2455639 - CVE-2026-34986 opkssh: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object [epel-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2455639
[ 2 ] Bug #2455667 - CVE-2026-34986 opkssh: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2455667
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-245867ac28' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
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Name: opkssh
Product: Fedora 42
Version: 0.13.0
Release: 8.fc42
Summary: OpenPubkey SSH
Topics Covered
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