{"api_version":"1","generated_at":"2026-07-23T15:16:40+00:00","cve":"CVE-2021-21250","urls":{"html":"https://cve.report/CVE-2021-21250","api":"https://cve.report/api/cve/CVE-2021-21250.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-21250","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21250"},"summary":{"title":"CVE-2021-21250","description":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which may lead to arbitrary file read. When BuildSpec is provided in XML format, the spec is processed by XmlBuildSpecMigrator.migrate(buildSpecString); which processes the XML document without preventing the expansion of external entities. These entities can be configured to read arbitrary files from the file system and dump their contents in the final XML document to be migrated. If the files are dumped in properties included in the YAML file, it will be possible for an attacker to read them. If not, it is possible for an attacker to exfiltrate the contents of these files Out Of Band. This issue was addressed in 4.0.3 by ignoring ENTITY instructions in xml file.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2021-01-15 21:15:00","updated_at":"2021-01-21 14:28:00"},"problem_types":["CWE-538"],"metrics":[],"references":[{"url":"https://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770f","name":"https://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770f","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"Fix XXE injection attack by disabling XML DTD handling · theonedev/onedev@9196fd7 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2r","name":"https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2r","refsource":"CONFIRM","tags":["Third Party Advisory"],"title":"Post-Auth External Entity Expansion (XXE) · Advisory · theonedev/onedev · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21250","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21250","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"21250","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"onedev_project","cpe5":"onedev","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21250","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"onedev_project","cpe5":"onedev","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-21250","STATE":"PUBLIC","TITLE":"Post-Auth External Entity Expansion (XXE)"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"onedev","version":{"version_data":[{"version_value":"< 4.0.3"}]}}]},"vendor_name":"theonedev"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"OneDev is an all-in-one devops platform. 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This issue was addressed in 4.0.3 by ignoring ENTITY instructions in xml file."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-538 File and Directory Information Exposure"}]}]},"references":{"reference_data":[{"name":"https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2r","refsource":"CONFIRM","url":"https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2r"},{"name":"https://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770f","refsource":"MISC","url":"https://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770f"}]},"source":{"advisory":"GHSA-9pph-8gfc-6w2r","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-01-15 21:15:00","lastModifiedDate":"2021-01-21 14:28:00","problem_types":["CWE-538"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:N/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4},"severity":"MEDIUM","exploitabilityScore":8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:*","versionEndExcluding":"4.0.3","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"21250","Ordinal":"195376","Title":"CVE-2021-21250","CVE":"CVE-2021-21250","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"21250","Ordinal":"1","NoteData":"OneDev is an all-in-one devops platform. 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