by Michael Hawkins.
An SQL injection risk was identified in the "external database" authentication plugin (auth_db). Note: This only affected sites with the auth_db authentication plugin enabled.
Severity/Risk: Serious
Versions affected: 5.1 to 5.1.3, 5.0 to 5.0.6, 4.5 to 4.5.10 and earlier unsupported versions
Versions fixed: 5.1.4, 5.0.7 and 4.5.11
Reported by: Melvinsh
CVE identifier: CVE-2026-7274
Changes (main): http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88138
Tracker issue: MDL-88138 SQL injection risk in external database authentication plugin