{"id":"CVE-2021-41042","aliases":["EUVD-2022-6255","GHSA-6296-mvgp-27hp"],"status":"published","title":"XML External Entity Reference in Eclipse Lyo","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01002,"percentile":0.63361,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2022-07-07T20:55:10Z","modified":"2026-06-17T04:07:47Z","fixes":[{"ecosystem":"Maven","package":"org.eclipse.lyo:lyo-parent","fixed_in":["5.0.0.Final"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.eclipse.lyo:lyo-parent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"last_affected":"4.1.0"},{"fixed":"5.0.0.Final"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.eclipse.lyo:lyo-parent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"5.0.0.Final"}]}],"versions":["4.0.0","4.0.0.RC","4.1.0","4.1.0.M1","4.1.0.RC","4.1.0.alpha1","5.0.0.CR","5.0.0.alpha1","5.0.0.alpha2","5.0.0.alpha3","5.0.0.alpha4"]}],"products":[{"vendor":"eclipse","product":"lyo"},{"vendor":"the eclipse foundation","product":"eclipse lyo"}],"references":[{"url":"https://gitlab.eclipse.org/eclipsefdn/emo-team/emo/-/issues/287","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41042","tags":["advisory"]},{"url":"https://github.com/eclipse/lyo/commit/a8b15b7f49ca15e55f6699749c39705d21367c6e","tags":["web"]},{"url":"https://github.com/eclipse/lyo/releases/tag/v5.0.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6296-mvgp-27hp"},{"url":"https://github.com/eclipse/lyo","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-41042","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","status":"published","published":"2022-07-07T20:55:10Z","modified":"2024-08-04T02:59:31.15Z","cwes":["CWE-611"],"updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2022-6255","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","status":"published","published":"2022-07-07T20:55:10Z","modified":"2024-08-04T02:59:31Z","updated_at":"2026-11-03T03:24:18.784846Z"}],"ghsa":[{"id":"GHSA-6296-mvgp-27hp","title":"XML External Entity Reference in Eclipse Lyo","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","status":"published","published":"2022-07-08T00:00:42Z","modified":"2023-01-27T05:05:14Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:36:21.8171Z"}],"nvd":[{"id":"CVE-2021-41042","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","status":"published","published":"2022-07-07T21:15:09.89Z","modified":"2026-06-17T04:07:47.823Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:07:06.501652Z"}],"osv":[{"id":"GHSA-6296-mvgp-27hp","title":"XML External Entity Reference in Eclipse Lyo","description":"In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.","status":"published","published":"2022-07-08T00:00:42Z","modified":"2024-02-21T05:42:56.933409Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:38.911014Z"}]}}