{"id":"CVE-2020-5539","aliases":["EUVD-2020-26701","GHSA-4vhp-vr67-vg4f"],"status":"published","title":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions,...","description":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions, which allows remote attackers to impersonate an arbitrary user and then alter or disclose the information via unspecified vectors.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00842,"percentile":0.58222,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2020-03-02T07:00:24Z","modified":"2026-06-17T03:21:34Z","products":[{"vendor":"grandit","product":"grandit"},{"vendor":"grandit corporation","product":"grandit"}],"references":[{"url":"https://jvn.jp/en/jp/JVN73472345/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.grandit.jp/etc/20200228_letter.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5539"},{"url":"https://github.com/advisories/GHSA-4vhp-vr67-vg4f"}],"sources":{"cve":[{"id":"CVE-2020-5539","description":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions, which allows remote attackers to impersonate an arbitrary user and then alter or disclose the information via unspecified vectors.","status":"published","published":"2020-03-02T07:00:24Z","modified":"2024-08-04T08:30:24.499Z","updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-26701","description":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions, which allows remote attackers to impersonate an arbitrary user and then alter or disclose the information via unspecified vectors.","status":"published","published":"2020-03-02T07:00:24Z","modified":"2024-08-04T08:30:24Z","updated_at":"2026-11-03T03:08:06.745484Z"}],"ghsa":[{"id":"GHSA-4vhp-vr67-vg4f","title":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions,...","description":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions, which allows remote attackers to impersonate an arbitrary user and then alter or disclose the information via unspecified vectors.","status":"published","published":"2022-05-24T17:10:00Z","modified":"2023-01-29T05:01:38Z","updated_at":"2026-11-02T14:44:52.661438Z"}],"nvd":[{"id":"CVE-2020-5539","description":"GRANDIT Ver.1.6, Ver.2.0, Ver.2.1, Ver.2.2, Ver.2.3, and Ver.3.0 do not properly manage sessions, which allows remote attackers to impersonate an arbitrary user and then alter or disclose the information via unspecified vectors.","status":"published","published":"2020-03-02T08:15:10.66Z","modified":"2026-06-17T03:21:34Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:05:54.796125Z"}]}}