CVE-2026-41689 Server-side request forgery in Wallos
Low-privilege users can exploit shared webhook allowlists to send arbitrary requests to internal services, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41689?
CVE-2026-41689 is a medium-severity server-side request forgery vulnerability in ellite Wallos, published on 7 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the webhook notification feature reuses an administrator-configured local-target allowlist for every logged-in user. Any normal user can fully control a webhook URL, headers, and body, then use Wallos to send server-side requests to allowlisted internal automation services. When such a target exposes deployment or execution APIs, this can further enable adjacent-service RCE, but that downstream result is conditional on the target service. At time of publication, there are no publicly available patches.
Which versions are affected by CVE-2026-41689?
How do I fix CVE-2026-41689?
No fix has been published for CVE-2026-41689 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-41689 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41689 exists.
Sources
Also known as GHSA-jx6w-832g-42wv.