CVE-2026-114470 Cross-Site Request Forgery (CSRF) in hMailServer
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114470?
CVE-2026-114470 is a medium-severity vulnerability in Progressive Robot Ltd hMailServer, published on 21 Oct 2026.
Official description
Cross-site request forgery in the REST API of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote attacker to make an authenticated user's browser perform a state-changing request. The REST API accepts HTTP Basic authentication and answers a browser with a Basic sign-in box; a browser caches the credential once the box is answered and sends it with later requests to that origin, including a top-level form post from another site, and the server reads a request body whatever its declared content type. The cross-site protection covered only the cookie session (a header a cross-site form cannot set, and a SameSite=Strict cookie); HTTP Basic was not held to it. A page under an attacker's control, visited by a user whose browser holds a cached Basic credential for the REST API - typically an administrator who signed in through the box - could therefore cause a state-changing request such as creating a domain, an account or an API key, or changing a setting, with the victim's credential. The attacker cannot read the cross-origin response, so the forgery is blind.
Weakness: CWE-352
Which versions are affected by CVE-2026-114470?
How do I fix CVE-2026-114470?
No fix has been published for CVE-2026-114470 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114470 being exploited?
There is no known exploitation of CVE-2026-114470 in the wild and no public exploit code.
Sources
Also known as GHSA-7f84-v6r3-cxq8.