Threat database

CVE-2026-54049 is a stored cross-site scripting (XSS) vulnerability in the Sakai Conversations tool affecting versions 23.0 to before 23.5 and 25.0 to before 25.3. The vulnerability arises because topic and post messages are stored without HTML sanitization and rendered using LitElement's unsafeHTML() directive. Authenticated users with access to a site using the Conversations tool can inject arbitrary HTML and JavaScript, which executes in the browsers of other users viewing the content. This issue has been fixed in versions 23.5, 25.3, and 26.0.

Sakai is a Collaboration and Learning Environment (CLE). From 23.0 until 23.5 and 25.3, the DELETE /api/users/{userId}/profile/image endpoint allows an authenticated user to delete another user's profile image because ProfileController.removeProfileImage() passes the attacker-controlled userId to ProfileServiceImpl.removeProfileImage() without verifying ownership, and profileImageUploadedRepository.deleteById(userId) removes the selected row. The related DELETE /api/users/{userId}/profile/pronunciation endpoint also omits session validation and ownership checks before ProfileServiceImpl.removePronunciationRecording() deletes the target user's recording. The upload path is not affected because it already verifies ownership, and superusers remain intentionally authorized to modify other profiles. Successful exploitation can repeatedly remove profile identity artifacts, including administrator and instructor images, and disrupt workflows that rely on those artifacts. This issue is fixed in versions 23.5, 25.3, and 26.0.

Sakai is a Collaboration and Learning Environment (CLE). In versions 23.0 through 23.4 and 25.0 through 25.1, group titles and description can contain cross-site scripting scripts. The patch is included in releases 25.2 and 23.5. As a workaround, one can check the SAKAI_SITE_GROUP table for titles and descriptions that contain this info.

Sakai is a Collaboration and Learning Environment. Prior to versions 23.5 and 25.0, EncryptionUtilityServiceImpl initialized an AES256TextEncryptor password (serverSecretKey) using RandomStringUtils with the default java.util.Random.java.util.Random is a non‑cryptographic PRNG and can be predicted from limited state/seed information (e.g., start time window), substantially reducing the effective search space of the generated key. An attacker who can obtain ciphertexts (e.g., exported or at‑rest strings protected by this service) and approximate the PRNG seed can feasibly reconstruct the serverSecretKey and decrypt affected data. SAK-49866 is patched in Sakai 23.5, 25.0, and trunk.