CVE-2026-117471 User-controlled Duo host permits authenticated SSRF in Psono Server
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-117471?
CVE-2026-117471 is a medium-severity vulnerability in esaqa GmbH Psono, published on 27 Oct 2026.
Official description
Psono Server CE && EE versions 0.1.0 through 7.2.3 accepted a user-controlled host when configuring a personal Duo device and passed it to the Duo client without an allowlist or explicit timeout. An authenticated remote attacker could cause the server to connect to selected hosts over HTTPS on port 443 and distinguish failure modes, providing an internal DNS and service-reachability oracle. Connections still required TLS certificate validation, and the flaw did not provide arbitrary protocol or port access. Unresponsive targets could also occupy a server worker until the operating-system timeout.
Weakness: CWE-918
Which versions are affected by CVE-2026-117471?
How do I fix CVE-2026-117471?
No fix has been published for CVE-2026-117471 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-117471 being exploited?
There is no known exploitation of CVE-2026-117471 in the wild and no public exploit code.
Sources
Also known as GHSA-q3ph-3gv2-g5wq.