CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A patch bypass vulnerability for CVE-2026-27636 in FreeScout 1.8.206 and earlier allows any authenticated user with file upload permissions to achieve Remote Code Execution (RCE) on the server by uploading a malicious .htaccess file using a zero-width space character prefix to bypass the security check. The vulnerability exists in the sanitizeUploadedFileName() function in app/Http/Helper.php. The function contains a Time-of-Check to Time-of-Use (TOCTOU) flaw where the dot-prefix check occurs before sanitization removes invisible characters. This vulnerability is fixed in 1.8.207.
Засегнати продукти
- freescout-help-desk freescout: < 1.8.207
Вид слабост
История
- 3 март 2026 Публикувано
Други уязвимости в freescout-help-desk freescout
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-28289
- https://nvd.nist.gov/vuln/detail/CVE-2026-28289
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-5gpc-65p8-ffwp
- https://github.com/freescout-help-desk/freescout/commit/f7bc16c56a6b13c06da52ad51fd666546b40818f
- https://www.ox.security/blog/freescout-rce-cve-2026-28289/