{"schema_version":"1.3.1","id":"GO-2026-6324","modified":"2026-09-02T18:37:27Z","published":"2026-09-02T18:37:27Z","aliases":["CVE-2026-55761","GHSA-x626-fcwx-f5pc"],"summary":"Portainer has Unauthenticated Restore Endpoint that Allows Admin Takeover on Uninitialized Instances in github.com/portainer/portainer","details":"Portainer has Unauthenticated Restore Endpoint that Allows Admin Takeover on Uninitialized Instances in github.com/portainer/portainer.\n\nNOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.\n\n(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)\n\nThe additional affected modules and versions are: github.com/portainer/portainer from v2.39.0 before v2.39.4, from v2.40.0 before v2.43.0.","affected":[{"package":{"name":"github.com/portainer/portainer","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{"custom_ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.39.0"},{"fixed":"2.39.4"},{"introduced":"2.40.0"},{"fixed":"2.43.0"}]}]}}],"references":[{"type":"ADVISORY","url":"https://github.com/portainer/portainer/security/advisories/GHSA-x626-fcwx-f5pc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55761"},{"type":"FIX","url":"https://github.com/portainer/portainer/commit/49f19107cf9a3540cbe406c9eb7f24390e1af02b"},{"type":"FIX","url":"https://github.com/portainer/portainer/commit/d2b56efcb4e43c4168bb6688eee9f6bf22867312"},{"type":"REPORT","url":"https://github.com/portainer/portainer/issues/2770"},{"type":"WEB","url":"https://github.com/portainer/portainer/releases/tag/2.39.4"},{"type":"WEB","url":"https://github.com/portainer/portainer/releases/tag/2.43.0"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-6324","review_status":"UNREVIEWED"}}