Portainer has Unauthenticated Restore Endpoint that Allows Admin Takeover on Uninitialized Instances
High-risk advisory
CVE-2026-55761
Summary
Portainer has Unauthenticated Restore Endpoint that Allows Admin Takeover on Uninitialized Instances
Why it matters
GitHub has published a reviewed security advisory for github.com/portainer/portainer. Prioritize it with other application dependency updates, especially because EPSS places it in the 40% percentile.
Operator check
Check whether github.com/portainer/portainer is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 7.1. EPSS probability: 0.5%; percentile: 40%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.