{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-122138","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-04T18:13:13.223Z","datePublished":"2026-11-04T20:36:55.818Z","dateUpdated":"2026-11-04T20:36:55.818Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-04T20:36:55.818Z"},"datePublic":"2026-11-04T14:28:24.000Z","title":"BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass","descriptions":[{"lang":"en","value":"BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 contains a login rate limit bypass vulnerability in LoginMiddleware.php that keys failed-login counters on case-sensitive usernames. Unauthenticated attackers can vary username casing against case-insensitive MySQL lookups to get extra attempts and brute-force passwords past the per-account lockout."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Restriction of Excessive Authentication Attempts","cweId":"CWE-307","type":"CWE"}]}],"affected":[{"vendor":"blueprintue","product":"blueprintue-self-hosted-edition","defaultStatus":"unaffected","versions":[{"version":"4.2.0","lessThan":"4.3.4","status":"affected","versionType":"semver"}],"packageURL":"pkg:github/blueprintue/blueprintue-self-hosted-edition","repo":"https://github.com/blueprintue/blueprintue-self-hosted-edition"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-773r-585g-6vc3","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-773r-585g-6vc3)"},{"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/bd4af38d2f7d499be23fc4106f93980a1348ddd7","tags":["patch"]},{"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/267","tags":["patch","issue-tracking"]},{"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.4","tags":["release-notes"],"name":"blueprintue-self-hosted-edition v4.3.4 Release Notes"},{"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/middlewares/LoginMiddleware.php#L119-L158","tags":["technical-description"]},{"name":"VulnCheck Advisory: BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-4.2.0-before-4.3.4-login-rate-limit-bypass"}],"credits":[{"lang":"en","value":"Farhan Khan","type":"finder"},{"lang":"en","value":"rancoud","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}}}}