Linuxsecurity Denial of Service Vulnerabilities in Nextcloud Affecting Fedora Users
Article Content
- •Nextcloud 34.0.4 has multiple critical DoS vulnerabilities.
- •CVE-2026-48988, CVE-2026-82562, and CVE-2026-82417 are confirmed exploited.
- •Users are urged to upgrade to the latest version to avoid service disruptions.
Multiple Denial of Service (DoS) vulnerabilities have been identified in Nextcloud version 34.0.4, affecting Fedora 43, 44, and 45 systems. The vulnerabilities include CVE-2026-48988, CVE-2026-82562, and CVE-2026-82417, all of which were published between June and August 2026. These vulnerabilities allow attackers to exploit specific functions, leading to service disruptions through improper validation and processing issues. CISA has confirmed the exploitation of these vulnerabilities, urging system administrators to apply the necessary patches. The vulnerabilities impact a wide range of users who rely on Nextcloud for file management and synchronization. Users are advised to upgrade to the latest version to mitigate risks. The updates can be installed using the 'dnf' update program. The vulnerabilities were disclosed in advisories published on September 28, 2026.
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