CVE-2022-46181 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in github.com/gotify/server. A fix is available for github.com/gotify/server — see the affected versions and patch details below.
Gotify server XSS vulnerability in the application image file upload
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2022-46181.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
github.com/gotify/serverReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
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 | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/gotify/server | all versions | 2.2.2go get github.com/gotify/server@v2.2.2 |
Affected Products
servergotifyDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/gotify/server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/gotify/server to 2.2.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-46181 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is CVE-2022-46181 in your dependencies?
Find it across Go, including transitive dependencies.