{"id":"CVE-2026-117468","state":"PUBLISHED","title":"Device-code claim permits restricted token escalation in Psono Server","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.","publishedAt":"2026-10-27T05:41:30.742Z","updatedAt":"2026-10-27T05:59:08.920Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"esaqa"},"assigner":"esaqa","products":["esaqa GmbH Psono"],"affected":[{"vendor":"esaqa GmbH","product":"Psono","defaultStatus":"unaffected","versions":[{"version":"5.3.5","status":"affected","lessThan":"7.2.4","versionType":"semver"}],"repo":"https://gitlab.com/esaqa/psono/psono-server","modules":["Psono Server Community Edition","Psono Server Enterprise Edition"],"programFiles":["psono/restapi/views/device_code_claim.py","psono/restapi/views/device_code_token.py"]}],"references":["https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/views/device_code_claim.py","https://gitlab.com/esaqa/psono/psono-server/-/commit/19ed5a192c704fece1645d946b6f4c36045bacbe","https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4","https://gitlab.com/esaqa/psono/psono-server","https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117468.md"],"weaknesses":["CWE-269"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/117xxx/CVE-2026-117468.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-117468","state":"PUBLISHED","datePublished":"2026-10-27T05:41:30.742Z","dateUpdated":"2026-10-27T05:59:08.920Z","assignerShortName":"esaqa","assignerOrgId":"fdf66990-8419-4c8c-8848-ec15d75773b4","dateReserved":"2026-10-27T05:33:18.001Z"},"containers":{"cna":{"title":"Device-code claim permits restricted token escalation in Psono Server","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"esaqa GmbH","product":"Psono","defaultStatus":"unaffected","versions":[{"version":"5.3.5","status":"affected","lessThan":"7.2.4","versionType":"semver"}],"repo":"https://gitlab.com/esaqa/psono/psono-server","modules":["Psono Server Community Edition","Psono Server Enterprise Edition"],"programFiles":["psono/restapi/views/device_code_claim.py","psono/restapi/views/device_code_token.py"]}],"references":[{"url":"https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/views/device_code_claim.py","tags":["technical-description"]},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/commit/19ed5a192c704fece1645d946b6f4c36045bacbe","tags":["patch"]},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4","tags":["release-notes"]},{"url":"https://gitlab.com/esaqa/psono/psono-server","tags":["product"]},{"url":"https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117468.md","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269 Improper Privilege Management","type":"CWE"}]}],"providerMetadata":{"shortName":"esaqa","orgId":"fdf66990-8419-4c8c-8848-ec15d75773b4","dateUpdated":"2026-10-27T05:59:08.920Z"},"datePublic":"2026-10-27T00:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"A restricted, short-lived API key session could be escalated to a full read-write session lasting up to 365 days, enabling unauthorized modification of encrypted secrets and shares."}]}],"solutions":[{"lang":"en","value":"Upgrade to Psono Server 7.2.4 or later.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Upgrade to Psono Server 7.2.4 or later.</p>"}]}],"timeline":[{"time":"2026-07-29T16:10:00.000Z","lang":"en","value":"Vulnerability reported to vendor"},{"time":"2026-07-30T07:13:00.000Z","lang":"en","value":"Vendor fix implemented"},{"time":"2026-07-30T13:16:00.000Z","lang":"en","value":"Psono CE & EE Server 7.2.4 released"}],"credits":[{"lang":"en","value":"Ryan Chaplin","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}}}}}