CVE-2026-117471
User-controlled Duo host permits authenticated SSRF in Psono Server
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | esaqa gmbh |
| Product | psono |
| Published | Oct 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for esaqa gmbh psono
Be the first to know when new medium vulnerabilities affecting esaqa gmbh psono are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Affected Versions
esaqa GmbH / Psono
0.1.0 < 7.2.4
References
gitlab.com: https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117471.md gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/new_duo.py gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/commit/4059830475744791f3d3a1daa4e1603aea5549ed gitlab.com: https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4 gitlab.com: https://gitlab.com/esaqa/psono/psono-server
Credits
Ryan Chaplin