- Description
- When a post is published, Postiz treats a media path that is not a web address as a file on the server's disk, but it does not check that the file lies inside the upload directory. A registered user can store a crafted media path with a post, get it past the checks that normally restrict it, and have the publishing worker read an arbitrary file and send it as an attachment to a Discord server the user controls. The same unconfined reads can be reached through two further routes. One tells the caller whether a file exists and can exhaust the backend's memory, the other delivers the file the same way as the main route. Self-registration is open by default, so the attacker needs no existing account.
- Source
- 4cdc9741-f887-419a-a2fd-acbbd2729276
- NVD status
- Received
CVSS 3.1
- Type
- Secondary
- Base score
- 9.6
- Impact score
- 5.8
- Exploitability score
- 3.1
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- Severity
- CRITICAL
- 4cdc9741-f887-419a-a2fd-acbbd2729276
- CWE-22
- Hype score
- Not currently trending