CVE-2026-55761

Publié : 8 juillet 2026

Modifié : 8 juillet 2026

Description détaillée

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. In versions 2.39.0 through 2.39.3 and 2.40.0 until 2.43.0, unauthenticated restore and administrator initialization endpoints (/api/restore and /api/users/admin/init) remain accessible during the five-minute setup window for uninitialized instances, allowing a network attacker to restore a crafted backup or create the first administrator account and gain full administrative access. This issue is fixed in versions 2.39.4 and 2.43.0.

Références et Patchs

https://github.com/portainer/portainer/commit/49f19107cf9a3540cbe406c9eb7f24390e1af02b https://github.com/portainer/portainer/commit/d2b56efcb4e43c4168bb6688eee9f6bf22867312 https://github.com/portainer/portainer/issues/2770 https://github.com/portainer/portainer/releases/tag/2.39.4 https://github.com/portainer/portainer/releases/tag/2.43.0 https://github.com/portainer/portainer/security/advisories/GHSA-x626-fcwx-f5pc

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