CVE-2026-28427 OpenDeck affected by path traversal allows arbitrary file read
An attacker can read arbitrary files by exploiting a path traversal vulnerability in the OpenDeck local web service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28427?
CVE-2026-28427 is a medium-severity path traversal vulnerability in nekename OpenDeck, published on 4 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OpenDeck is Linux software for your Elgato Stream Deck. Prior to 2.8.1, the service listening on port 57118 serves static files for installed plugins but does not properly sanitize path components. By including ../ sequences in the request path, an attacker can traverse outside the intended directory and read any file OpenDeck can access. This vulnerability is fixed in 2.8.1.
Which versions are affected by CVE-2026-28427?
It affects 1 product.
Products include Nekename Opendeck.
How do I fix CVE-2026-28427?
No fix has been published for CVE-2026-28427 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-28427 being exploited?
There is no known exploitation of CVE-2026-28427 in the wild and no public exploit code.
Sources
Also known as GHSA-4974-g27q-h5m8.