CVE-2026-126812
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: not scored yet.
- Severity: 9.3 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Weakness
- CWE-258
- Record status
- Received
Attack profile CVSS 4.0 · 9.3
- Attack vector
- Network
- Complexity
- Low
- Attack requirements
- None
- Privileges needed
- None
- User interaction
- None
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-126812.md and follow it. Check whether this project is affected by CVE-2026-126812. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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/security/advisories/GHSA-9f6r-vjc7-jq67
References
- 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://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/security/advisories/GHSA-9f6r-vjc7-jq67
- https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-before-4.3.7-empty-mariadb-root-password-via-docker-compose