{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"blueprintue/blueprintue-self-hosted-edition","product":"blueprintue-self-hosted-edition","source":"CNA: VulnCheck","vendor":"blueprintue","versions":[{"lessThan":"4.3.4","status":"affected","version":"4.2.0","versionType":"semver"}]}],"cveId":"CVE-2026-122138","cwes":["CWE-307"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}],"modifiedAt":1793824615818,"publishedAt":1793824615818,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-773r-585g-6vc3"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/bd4af38d2f7d499be23fc4106f93980a1348ddd7"},{"source":"CNA: VulnCheck","tags":["patch","issue-tracking"],"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/267"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.4"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/middlewares/LoginMiddleware.php#L119-L158"},{"source":"CNA: VulnCheck","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"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/bd4af38d2f7d499be23fc4106f93980a1348ddd7"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/267"}],"revision":"dd6593c4b6fe7b34fd63b5bfcf15261e29e0587c0c800bba5e0b10d8d2916542","sources":[{"modifiedAt":1793824615818,"name":"CNA: VulnCheck","retrievedAt":1793826733233,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122138"}],"ssvc":null,"status":"published","title":"BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass","updatedAt":1793826733233}