{"id":"CVE-2021-21243","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-21243","generatedAt":"2026-11-05T01:47:35.100Z","title":"In OneDev before version 4.0.3, a Kubernetes REST endpoint exposes two methods that deserialize untrusted data from the request body.","description":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, a Kubernetes REST endpoint exposes two methods that deserialize untrusted data from the request body. These endpoints do not enforce any authentication or authorization checks. This issue may lead to pre-auth RCE. This issue was fixed in 4.0.3 by not using deserialization at KubernetesResource side.","published":"2021-01-15T20:15:12.000Z","lastModified":"2026-06-17T03:35:07.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-74","CWE-502"],"affected":["onedev project/onedev"],"epss":{"score":0.54494,"percentile":0.99017,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 54.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://github.com/theonedev/onedev/commit/9637fc8fa461c5777282a0021c3deb1e7a48f137","tags":["Patch","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-9mmq-fm8c-q4fv","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/theonedev/onedev/commit/9637fc8fa461c5777282a0021c3deb1e7a48f137","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-9mmq-fm8c-q4fv","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21243","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}