{"schemaVersion":3,"id":"CVE-2023-23942","aliases":["UBUNTU-CVE-2023-23942","DEBIAN-CVE-2023-23942"],"status":"published","duplicateOf":null,"title":null,"description":"The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer. Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are no known workarounds for this issue.","dates":{"published":"2023-02-06T20:23:06.072Z","modified":"2025-03-10T21:15:57.175Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.1,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":7.2,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":7.2,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00682,"percentile":0.51634,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00682},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00682,"percentile":0.51634}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00682,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00682,"percentile":0.51634}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"debian","product":"nextcloud-desktop","name":"nextcloud-desktop","label":"nextcloud-desktop","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/nextcloud-desktop","purlType":"deb","versions":[{"text":"< 3.6.4-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.4-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"nextcloud-desktop","name":"nextcloud-desktop","label":"nextcloud-desktop","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nextcloud-desktop","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"nextcloud","product":"desktop","name":"desktop","label":"desktop","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.6.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.3","eol":null,"hubHref":"/vendor/nextcloud/desktop"},{"vendor":"nextcloud","product":"security-advisories","name":"security-advisories","label":"security-advisories","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.6.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.3","eol":null,"hubHref":"/vendor/nextcloud/security-advisories"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-64qc-vf6v-8xgg","label":"github.com/nextcloud/security-advisories/security/advisories/GHSA-64qc-vf6v-8xgg","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Vendor Advisory"]},{"url":"https://github.com/nextcloud/desktop/pull/5233","label":"github.com/nextcloud/desktop/pull/5233","hostname":"github.com","tags":["X Refsource MISC","REPORT","Patch"]},{"url":"https://hackerone.com/reports/1788598","label":"hackerone.com/reports/1788598","hostname":"hackerone.com","tags":["X Refsource MISC","REPORT","Permissions Required","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-23942","label":"ubuntu.com/security/CVE-2023-23942","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-23942","label":"www.cve.org/CVERecord?id=CVE-2023-23942","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-23942","label":"security-tracker.debian.org/tracker/CVE-2023-23942","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2023:0090-1","OPENSUSE-SU-2023:0171-1"],"duplicates":[],"related":["OPENSUSE-SU-2023:0090-1","OPENSUSE-SU-2023:0171-1"]},"timeline":[{"kind":"published","date":"2023-02-06T20:23:06.072Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-03-10T21:15:57.175Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":25,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T10:34:23.721Z","stale":false,"partial":false}}