CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
BookStack before 26.05.4 contains a broken access control vulnerability that allows authenticated API users with image-update or image-delete permissions to manipulate other users' avatars by exploiting missing content-type restrictions in the Image Gallery API endpoints. Attackers can supply a user avatar's ID to the API controller, which loads any image type without the web controller's gallery and drawio restrictions, and when the avatar's uploaded_to field matches a page ID accessible to the attacker, the authorization check passes allowing the attacker to rename, replace, or delete the target user's avatar without requiring user-management permission.
Засегнати продукти
- BookStackApp BookStack: преди 26.05.4
Вид слабост
История
- 24 август 2026 Публикувано
Други уязвимости в BookStackApp BookStack
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-67204
- https://nvd.nist.gov/vuln/detail/CVE-2026-67204
- https://www.bookstackapp.com/blog/bookstack-release-v26-05-4/
- https://codeberg.org/bookstack/bookstack/releases/tag/v26.05.4
- https://github.com/BookStackApp/BookStack/releases/tag/v26.05.4
- https://www.vulncheck.com/advisories/bookstack-broken-access-control-via-image-gallery-api