{"id":"CVE-2026-103476","published":"2026-09-30T18:18:17.973","lastModified":"2026-10-01T16:17:36.317","description":"yii2-starter-kit through 4.2.0 fails to validate article publication status in the attachment-download endpoint, allowing unauthenticated attackers to download files from draft articles. Attackers can enumerate sequential attachment identifiers to retrieve files from unpublished articles without authentication or authorization checks.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/yii-starter-kit/yii2-starter-kit","tags":[]},{"url":"https://github.com/yii-starter-kit/yii2-starter-kit/blob/cc2c451e8c959c7300b04efea597706a38609f58/frontend/controllers/ArticleController.php#L69","tags":[]},{"url":"https://github.com/yii-starter-kit/yii2-starter-kit/issues/797","tags":[]},{"url":"https://www.vulncheck.com/advisories/yii2-starter-kit-through-4.2.0-unauthorized-file-download-via-attachment-download","tags":[]}],"exploitRefs":[{"url":"https://github.com/yii-starter-kit/yii2-starter-kit","tags":[]},{"url":"https://github.com/yii-starter-kit/yii2-starter-kit/blob/cc2c451e8c959c7300b04efea597706a38609f58/frontend/controllers/ArticleController.php#L69","tags":[]},{"url":"https://github.com/yii-starter-kit/yii2-starter-kit/issues/797","tags":[]}],"hasPoc":true,"ai":null}