{"id":"CVE-2026-44884","aliases":["GHSA-cqpq-2fgr-8mvc","GO-2026-5333"],"url":"https://o3.security/vulnerability/CVE-2026-44884","summary":"Portainer: Missing authorization on custom template file endpoint exposes template content","details":"Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8 and 2.39.1, a missing authorization vulnerability in the Custom Template file endpoint (GET /api/custom_templates/{id}/file) allows any authenticated user to read the file content of any custom template by enumerating sequential integer IDs, bypassing Resource Control access restrictions. Template files may contain environment-specific values such as connection strings, API tokens, or registry credentials that administrators would not expect standard users to read. This vulnerability is fixed in 2.33.8 and 2.39.1.","published":"2026-05-28T20:58:36.516Z","modified":"2026-08-12T03:51:33.330950154Z","cvss":null,"epss":{"score":0.00257,"percentile":0.17249,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/portainer/portainer","fixedVersion":"2.33.8"},{"ecosystem":"Go","name":"github.com/portainer/portainer","fixedVersion":"2.39.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44884.json"},{"type":"ADVISORY","url":"https://github.com/portainer/portainer/security/advisories/GHSA-cqpq-2fgr-8mvc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44884"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.330950154Z"}}