{"id":"CVE-2018-1000823","aliases":["EUVD-2018-0815","GHSA-jxm5-5xcw-h57q"],"status":"published","title":"exist-db:exist-core XML External Entity (XXE) vulnerability","description":"exist version \u003c= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01879,"percentile":0.79614,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2018-12-20T15:00:00Z","modified":"2026-10-20T10:50:19Z","fixes":[{"ecosystem":"Maven","package":"org.exist-db:exist-core","fixed_in":["5.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.exist-db:exist-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.exist-db:exist-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0"}]}],"versions":["5.0.0","5.0.0-RC8"]}],"products":[{"vendor":"exist-db","product":"exist"}],"references":[{"url":"https://0dd.zone/2018/10/27/exist-XXE/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/eXist-db/exist/issues/2180","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000823","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jxm5-5xcw-h57q","tags":["advisory"]},{"url":"https://github.com/eXist-db/exist/pull/2243","tags":["web"]},{"url":"https://github.com/eXist-db/exist/pull/2247","tags":["web"]},{"url":"https://github.com/eXist-db/exist/commit/1c3f0aec14d00bdbca175713af70cb7c7b868e9f","tags":["web"]},{"url":"https://github.com/eXist-db/exist/commit/b210f9fbf379b68842f2b055dda80d7e7479e96f","tags":["web"]},{"url":"https://0dd.zone/2018/10/27/exist-XXE","tags":["web"]},{"url":"https://github.com/eXist-db/exist","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-1000823","description":"exist version \u003c= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that 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