portainer: vulnerability

portainer

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments.

Fix it

github.com/portainer/portainer go

On 2.33.x?go get github.com/portainer/portainer@v2.33.8
On 2.39.x?go get github.com/portainer/portainer@v2.39.2
On 2.41.x?go get github.com/portainer/portainer@v2.41.0

First seen: 24 Oct 2026
Last update: 24 Oct 2026, 22:17 UTC
Fixed in: github.com/portainer/portainer 2.41.0
github.com/portainer/portainer 2.39.2
github.com/portainer/portainer 2.33.8
Identifiers: CVE-2026-44848
CVSS: 8.8
Source: news
On the menu as: Homelab apps
Go

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## portainer: vulnerability
Severity: high. Patch status: patched.
Affected: portainer
Fixed in: github.com/portainer/portainer 2.41.0, github.com/portainer/portainer 2.39.2, github.com/portainer/portainer 2.33.8
Ids: CVE-2026-44848

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments.

## Steps
1. Search every lockfile and manifest (package-lock.json, yarn.lock, pnpm-lock.yaml, requirements*.txt, poetry.lock, uv.lock, composer.lock, go.sum, Cargo.lock, Gemfile.lock) for `github.com/portainer/portainer`. For each hit, compare the installed version with the fix on the same major line: github.com/portainer/portainer 2.41.0, github.com/portainer/portainer 2.39.2, github.com/portainer/portainer 2.33.8. If it's lower, give the exact upgrade command for the package manager this repo uses.
2. This touches infrastructure (self-hosted). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-44848") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://github.com/portainer/portainer/security/advisories/GHSA-rrmm-9v76-h3p4 https://nvd.nist.gov/vuln/detail/CVE-2026-44848
https://pwned.coffee/i/portainer-community-edition-security-advisory-cve-2026-44848

Timeline

24 Oct 2026, 22:17 UTC
Fix status: unknown → patched.
24 Oct 2026
First reported.

Receipt

Exploitation: Public exploit code, no attacks reported
CISA ADP “CISA ADP rates exploitation of CVE-2026-44848 "poc" (SSVC).” source
Fix by release line: Product Affected Fixed in Source
github.com/portainer/portainer (go) >= 2.40.0, < 2.41.0 2.41.0 GitHub advisory
github.com/portainer/portainer (go) >= 2.39.0, < 2.39.2 2.39.2 GitHub advisory
github.com/portainer/portainer (go) >= 2.33.0, < 2.33.8 2.33.8 GitHub advisory
Score: CVSS 8.8 (high). CVSS 3.1 8.8 (NVD) for CVE-2026-44848
Last checked: 24 Oct 2026, 22:17 UTC

Product	Affected	Fixed in	Source
github.com/portainer/portainer (go)	>= 2.40.0, < 2.41.0	2.41.0	GitHub advisory
github.com/portainer/portainer (go)	>= 2.39.0, < 2.39.2	2.39.2	GitHub advisory
github.com/portainer/portainer (go)	>= 2.33.0, < 2.33.8	2.33.8	GitHub advisory

Sources: KEV – CVE record ✓ Vendor ✓

Sources

Totalone hot coffee