CVE-2026-126812: blueprintUE Self-Hosted Edition before 4.3.7 Empty MariaDB Root Password via Docker Compose

Critical 9.3 MariaDB

blueprintUE Self-Hosted Edition before 4.3.7 contains an insecure default configuration in its Docker Compose examples that sets MYSQL_ALLOW_EMPTY_PASSWORD=yes in database.env and publishes MariaDB on port 3306. Unauthenticated attackers reaching the Docker host on port 3306 can log in as root without a password to read, modify, or delete user accounts, blueprints, and all databases.

• CVE-2026-126812CVE identifier
• 9.3CVSS 4.0 base score (critical)
• 2026-11-11published

What do these terms mean? CVE · CVSS score · exploited (KEV) · EPSS · backported fix · all terms

Affected and fixed versions

Affected:

• blueprintue blueprintue-self-hosted-edition 1.0.0 to before 4.3.7

Patch it

Use the commands for your system. Distribution packages often keep an older version number with the fix backported, so compare with the fixed package versions in the table below, not only with the upstream version.

sudo apt update
sudo apt install --only-upgrade mariadb-server

sudo apt update
sudo apt install --only-upgrade mariadb-server

sudo dnf upgrade --refresh mariadb-server

sudo dnf upgrade --refresh mariadb-server

sudo zypper refresh
sudo zypper update mariadb

sudo dnf upgrade --releasever=latest mariadb1011-server (or mariadb105/114/118-server)

sudo pacman -Syu

apk update && apk upgrade mariadb

pkg update && pkg upgrade mariadb114-server (mariadbNNN-server)

General update steps for every system are on the Linux and Unix & BSD pages; after updating, see which services to restart.

Sources

• https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-9f6r-vjc7-jq67
• https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/e6a6e1d4c2f22efbbabf9fb31ec479544405b469
• https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/270
• https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.7
• https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.6/docker-examples/database.env
• https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.6/docker-examples/docker-compose-smtp.yml#L14-L24
• https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-before-4.3.7-empty-mariadb-root-password-via-docker-compose
• CVE-2026-126812 on CVE.org
• CVE-2026-126812 on NVD

Page generated automatically from official sources on 2026-11-11 23:19 UTC. Always confirm with your vendor's advisory.