Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L P L N H N N 6.0 .0026 17.6 —
AFFECTED Product Versions Fixed portainer >= 2.33.0, < 2.33.8 – —
TIMELINE May 7 Reserved by GitHub_M May 28 EXPLOIT PUBLISHED — CVE-2026-44884 (portainer). Public exploit reference added. May 28 Published (CNA: GitHub_M)
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.
| Date | Event | Detail |
|---|---|---|
| May 7, 2026 | Reserved | Reserved by GitHub_M |
| May 28, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-44884 (portainer). Public exploit reference added. |
| May 28, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| portainer | portainer | — | >= 2.33.0, < 2.33.8 | — |
Authoritative record: CVE-2026-44884 at cve.org
Vendors: portainer
Weaknesses: CWE-862
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44884 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.