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Jenkins security advisory (AV26-877)

Canada's Cyber Centre relayed a Jenkins advisory (AV26-877) covering core and numerous plugin vulnerabilities fixed in 2.568.3/2.580.

The Canadian Centre for Cyber Security published advisory AV26-877 for the Jenkins security advisory dated September 2, 2026. Affected products include Jenkins releases other than 2.568.3 and 2.580, plus plugins such as GitLab, LDAP, Microsoft Entra ID, SAML, Script Security, Pipeline Build Step, and others. Administrators are encouraged to review the linked advisory and apply necessary updates.

Canadian Centre for Cyber Security · 12d agoAdvisory

Jellyfin 12.0 Released With Security Fixes for Unauthorized File Access and XSS Flaws

Jellyfin 12.0 fixes unauthorized file access and web client XSS flaws, but requires careful upgrades due to breaking database migrations and plugin changes.

The open-source media server release prevents crafted requests from reading files outside designated directories, blocks unauthorized re-runs of the setup wizard, rejects plugin packages with unsafe names, strengthens parental control enforcement, and fixes cross-site scripting vulnerabilities in browser-based administration and media access workflows. Upgrades require a manual backup because the database schema migration is irreversible; supported paths start from version 10.10.7 or 10.11.x, and duplicate case-insensitive usernames will break migration. The release also retires legacy /emby/ and /mediabrowser/ routes, disables deprecated authentication by default, and targets .NET 10, requiring plugin rebuilds.

GBHackers · 7d agoVulnerability1