CVE-2022-46181: Gotify server XSS vulnerability in the application image file upload

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-29 · updated 2026-06-17
Weakness: CWE-79

Description

Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Versions prior to 2.2.2 contain an XSS vulnerability that allows authenticated users to upload .html files. An attacker could execute client side scripts **if** another user opened a link. The attacker could potentially take over the account of the user that clicked the link. 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 2.2.2. As a workaround, you can block access to non image files via a reverse proxy in the `./image` directory.

Affected products

gotify server: before 2.2.2 — fixed in 2.2.2

How to fix

Upgrade to a fixed version: gotify server 2.2.2. Check the vendor advisory for mitigations.

References

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