CVE-2022-46181
gotify/server vulnerable to Cross-site Scripting in the application image file upload
Impact
### Impact The XSS vulnerability allows authenticated users to upload .html files. With that, an attacker could execute client side scripts **if** another user opened a link, such as: ``` https://push.example.org/image/[alphanumeric string].html ``` An attacker could potentially take over the account of the user that clicked the link. Keep in mind, the Gotify UI won't natively expose such a malicious link, so an attacker has to get the user to open the malicious link in a context outside of Gotify. ### Patches The vulnerability has been fixed in version 2.2.2. ### Workarounds You can block access to non image files via a reverse proxy in the `./image` directory. ### References https://github.com/gotify/server/pull/534 https://github.com/gotify/server/pull/535 --- Thanks to rickshang (aka 无在无不在) for discovering and reporting this bug.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/gotify/server | <= 2.2.1 | 2.2.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gotify | Server | before 2.2.2 |