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Fedora 44 Ongres-Stringprep Important Security Fix Advisory 2026

Linuxsecurity •LinuxSecurity Advisories • June 20, 2026

[ 1 ] Bug #2487526 - Silent channel-binding authentication downgrade via unsupported certificate algorithms

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-3f51edec7b' at the command line. For more information, refer to the dnf documentation available at

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Fedora 44 and 43 Ongres Security Updates Address Authentication Vulnerabilities Recent security updates for Fedora 44 and 43 address significant vulnerabilities in the Ongres database authentication mechanisms. The updates fix silent channel-binding authentication downgrades via unsupported certificate algorithms, which could potentially allow attackers to exploit these vulnerabilities. Affected systems include Fedora 43 and 44 versions utilizing the Ongres database. The specific bugs are tracked as Bug #2487526 and Bug #2487527. Users are advised to apply the updates using the 'dnf' update program. These vulnerabilities were reported as significant security risks, prompting immediate action from the Fedora development team. The updates were released on June 10 and June 19, 2026, with advisories published on June 20, 2026. The vulnerabilities do not appear to be actively exploited at this time. 5 sources 61

Fedora 44 Ongres-Stringprep Important Security Fix Advisory 2026

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Extracted Entities

Companies (1)

CWE Weaknesses (1)