CVE-2026-54600 Wallos: Unauthenticated database replacement via import endpoint on fresh install
Unauthenticated attackers can replace the entire database on fresh installs of Wallos due to missing authentication on the import endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54600?
CVE-2026-54600 is a high-severity missing authorization vulnerability in ellite Wallos, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, endpoints/db/import.php has no authentication. The only guard is a user-table row count — if zero (fresh/unconfigured install), an unauthenticated attacker can replace the entire database. This issue has been patched in version 4.9.4.
Weakness: CWE-287
Which versions are affected by CVE-2026-54600?
How do I fix CVE-2026-54600?
No fix has been published for CVE-2026-54600 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54600 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54600 exists.
Sources
Also known as GHSA-8wqc-r9j3-rv7m.