{"id":"CVE-2021-3312","aliases":["EUVD-2021-2202","GHSA-g6v7-vqhx-6v6c"],"status":"published","title":"XML External Entity Reference in org.opencms:opencms-core","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0129,"percentile":0.70442,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2021-10-08T14:44:58Z","modified":"2026-10-20T10:53:46Z","fixes":[{"ecosystem":"Maven","package":"org.opencms:opencms-core","fixed_in":["12.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.opencms:opencms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"last_affected":"11.0.2"},{"fixed":"12.0.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.opencms:opencms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"12.0.0"}]}],"versions":["11.0.0","11.0.1","11.0.2"]}],"products":[{"vendor":"alkacon","product":"opencms"}],"references":[{"url":"https://github.com/alkacon/opencms-core/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://github.com/alkacon/opencms-core/issues/725","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3312","tags":["advisory"]},{"url":"https://github.com/alkacon/opencms-core/issues/721","tags":["web"]},{"url":"https://github.com/alkacon/opencms-core/commit/92e035423aa6967822d343e54392d4291648c0ee","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g6v7-vqhx-6v6c"},{"url":"https://github.com/alkacon/opencms-core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-3312","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-08T14:44:58Z","modified":"2024-08-03T16:53:17.53Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-2202","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-08T14:44:58Z","modified":"2024-08-03T16:53:17Z","updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-g6v7-vqhx-6v6c","title":"XML External Entity Reference in org.opencms:opencms-core","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-12T17:23:40Z","modified":"2023-02-01T05:06:29Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:36:39.086869Z"}],"nvd":[{"id":"CVE-2021-3312","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-08T15:15:09.217Z","modified":"2026-06-17T04:04:55.343Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:06:59.689345Z"}],"osv":[{"id":"CVE-2021-3312","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-08T15:15:09.217Z","modified":"2026-10-20T10:53:46.727204818Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"GHSA-g6v7-vqhx-6v6c","title":"XML External Entity Reference in org.opencms:opencms-core","description":"An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.","status":"published","published":"2021-10-12T17:23:40Z","modified":"2023-11-08T04:06:03.398566Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:47.472172Z"}]}}