CVE-2026-117468

Device-code claim permits restricted token escalation in Psono Server

Published Oct 27, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token's scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.

Remediation

Vendor Solution

Upgrade to Psono Server 7.2.4 or later.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Esaqa
Esaqa psono
Vendors & Products Esaqa
Esaqa psono
Type Values Removed Values Added
Description Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token's scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.
Title Device-code claim permits restricted token escalation in Psono Server
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
esaqa
Published
Updated
Nov 4, 2026, 3:01 PM
Reserved
Oct 27, 2026, 5:33 AM
Status
Deferred
Published
Oct 27, 2026, 6:17 AM
Modified
Nov 4, 2026, 3:17 PM