CVE-2026-108521 Studio-Saelix Sencho Add Remote Node API Endpoint validation.ts isValidRemoteUrl server-side request forgery
An authenticated user with node-management permissions can exploit a validation flaw in the Add Remote Node API to perform server-side request forgery.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108521?
CVE-2026-108521 is a medium-severity server-side request forgery vulnerability in Studio-Saelix Sencho, published on 11 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability has been found in Studio-Saelix Sencho up to 0.97.1. Affected by this issue is the function isValidRemoteUrl of the file backend/src/utils/validation.ts of the component Add Remote Node API Endpoint. Such manipulation leads to server-side request forgery. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor confirms: "The node API URL could be configured by an authenticated user with node-management permission and used to initiate server-side requests. [T]he report demonstrates server-side request capability but not arbitrary internal response exfiltration."
Weakness: CWE-918
Which versions are affected by CVE-2026-108521?
How do I fix CVE-2026-108521?
No fix has been published for CVE-2026-108521 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-2026-108521 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108521 exists.
Sources
Also known as GHSA-44m2-rqg4-q7xj.