{"api_version":"1","generated_at":"2026-07-23T14:32:57+00:00","cve":"CVE-2023-29000","urls":{"html":"https://cve.report/CVE-2023-29000","api":"https://cve.report/api/cve/CVE-2023-29000.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-29000","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-29000"},"summary":{"title":"CVE-2023-29000","description":"The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.7.0, by trusting that the server will return a certificate that belongs to the keypair of the user, a malicious server could get the desktop client to encrypt files with a key known to the attacker. This issue is fixed in Nextcloud Desktop 3.7.0. No known workarounds are available.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-04-04 13:15:00","updated_at":"2023-04-11 14:52:00"},"problem_types":["CWE-295"],"metrics":[],"references":[{"url":"https://hackerone.com/reports/1679267","name":"https://hackerone.com/reports/1679267","refsource":"MISC","tags":[],"title":"HackerOne","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/nextcloud/desktop/pull/4949","name":"https://github.com/nextcloud/desktop/pull/4949","refsource":"MISC","tags":[],"title":"validate certificate for E2EE against private key by mgallien · Pull Request #4949 · nextcloud/desktop · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534","name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534","refsource":"MISC","tags":[],"title":"Desktop client does not verify received singed certificate in end-to-end encryption · Advisory · nextcloud/security-advisories · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-29000","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29000","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"29000","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"desktop","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-29000","qid":"182630","title":"Debian Security Update for nextcloud-desktop (CVE-2023-29000)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-29000","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.7.0, by trusting that the server will return a certificate that belongs to the keypair of the user, a malicious server could get the desktop client to encrypt files with a key known to the attacker. This issue is fixed in Nextcloud Desktop 3.7.0. No known workarounds are available."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-295: Improper Certificate Validation","cweId":"CWE-295"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"nextcloud","product":{"product_data":[{"product_name":"security-advisories","version":{"version_data":[{"version_affected":"=","version_value":">= 3.0.0, < 3.7.0"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534","refsource":"MISC","name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534"},{"url":"https://github.com/nextcloud/desktop/pull/4949","refsource":"MISC","name":"https://github.com/nextcloud/desktop/pull/4949"},{"url":"https://hackerone.com/reports/1679267","refsource":"MISC","name":"https://hackerone.com/reports/1679267"}]},"source":{"advisory":"GHSA-h82x-98q3-7534","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-04-04 13:15:00","lastModifiedDate":"2023-04-11 14:52:00","problem_types":["CWE-295"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":2.5}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"3.7.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}