| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/gotify/server | < 2.2.3 | 2.2.3 |
Gotify exposes an outdated instance of the Swagger UI API documentation frontend at /docs which is susceptible to reflected XSS attacks when loading external Swagger config files.
Specifically, the DOMPurify version included with this version of Swagger UI is vulnerable to a rendering XSS incorporating the mutation payload detailed in CVE-2020-26870 which was patched in 2021. This is further tracked in the GitHub Advisory Database as GHSA-QRMM-W75W-3WPX.
An attacker can execute arbitrary JavaScript and 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.
The vulnerability has been fixed in version 2.2.3.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free