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CVE-2026-126812VulnerabilityPublished

blueprintUE Self-Hosted Edition before 4.3.7 contains an insecure default configuration in its Docker Compose examples

Source GCVE Database

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Authoritative record:CVE-2026-126812· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical : upgrade to 4.3.7 as a priority.

Data as of 11 Nov 2026, 22:20 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.09.3
CNA (VulnCheck)CVSS 3.19.8
Patch
Available – fixed in 4.3.7
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade blueprintue-self-hosted-edition to 4.3.7.

Affected software

ProductAffectedFixed in
blueprintueblueprintue-self-hosted-editionAffected
  • >=1.0.0 <4.3.7
Fixed in
  • 4.3.7
GitHubblueprintue-self-hosted-editionpkg:github/blueprintue-self-hosted-editionOther threatsAffected
  • >=1.0.0 <4.3.7
Fixed in
  • 4.3.7

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade to blueprintUE Self-Hosted Edition version 4.3.7 or later, where this insecure default configuration is corrected. Until then, users must ensure that the MYSQL_ALLOW_EMPTY_PASSWORD environment variable is not set to yes and that the MariaDB port 3306 is not exposed to untrusted networks. Restricting network access to the database port and setting strong passwords for the MariaDB root account are essential interim mitigations.

Description

blueprintUE Self-Hosted Edition versions prior to 4.3.7 have an insecure default Docker Compose configuration that sets MYSQL_ALLOW_EMPTY_PASSWORD=yes and exposes the MariaDB database on port 3306. This allows unauthenticated attackers with network access to the Docker host's port 3306 to log in as root without a password, enabling them to read, modify, or delete all user accounts, blueprints, and databases.

References

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