{"id":"CVE-2020-1755","aliases":["BIT-moodle-2020-1755","EUVD-2020-12585","GHSA-4265-mh49-263h","UBUNTU-CVE-2020-1755"],"status":"published","title":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a...","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00558,"percentile":0.46772,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-345"],"published":"2022-08-16T19:29:48Z","modified":"2026-10-24T10:30:33Z","fixes":[{"ecosystem":"Bitnami","package":"moodle","fixed_in":["3.5.11","3.6.9","3.7.5","3.8.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"moodle","ranges":[{"type":"SEMVER","events":[{"introduced":"3.5.0"},{"fixed":"3.5.11"},{"introduced":"3.6.0"},{"fixed":"3.6.9"},{"introduced":"3.7.0"},{"fixed":"3.7.5"},{"introduced":"3.8.0"},{"fixed":"3.8.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.9+dfsg-1","2.7.10+dfsg-1","2.7.11+dfsg-1","2.7.11+dfsg-2","2.7.12+dfsg-1","3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"]}],"products":[{"vendor":"moodle","product":"moodle"}],"references":[{"url":"https://moodle.org/mod/forum/discuss.php?d=398351","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1755","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4265-mh49-263h"},{"url":"https://ubuntu.com/security/CVE-2020-1755","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-1755","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-1755","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-16T19:29:48Z","modified":"2024-08-04T06:46:30.891Z","cwes":["CWE-345"],"updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12585","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-16T19:29:48Z","modified":"2024-08-04T06:46:30Z","updated_at":"2026-11-03T03:08:12.086746Z"}],"ghsa":[{"id":"GHSA-4265-mh49-263h","title":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a...","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-17T00:00:17Z","modified":"2023-01-29T05:05:23Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:45:46.865713Z"}],"nvd":[{"id":"CVE-2020-1755","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-16T21:15:09.587Z","modified":"2026-06-17T03:02:20.367Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:06:46.951463Z"}],"osv":[{"id":"CVE-2020-1755","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-16T21:15:09.587Z","modified":"2026-10-24T10:30:33.129315151Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:15.212689Z"},{"id":"UBUNTU-CVE-2020-1755","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2022-08-16T21:15:00Z","modified":"2026-09-23T18:46:06.972197433Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:23.344108Z"},{"id":"BIT-moodle-2020-1755","description":"In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.","status":"published","published":"2024-03-06T11:12:08.478Z","modified":"2026-09-08T08:48:14.527351998Z","updated_at":"2026-11-02T15:28:33.469426Z"}]}}