{"id":"CVE-2018-1000831","aliases":["EUVD-2018-2023","GHSA-68hq-qrc4-w5h8"],"status":"published","title":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response...","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","severity":{"version":"3.0","score":10,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01909,"percentile":0.80046,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-611"],"published":"2018-12-20T15:00:00Z","modified":"2026-10-20T10:49:54Z","products":[{"vendor":"k9mail","product":"k-9_mail"}],"references":[{"url":"https://github.com/k9mail/k-9/issues/3681","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://0dd.zone/2018/10/28/k9mail-XXE-MitM/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000831"},{"url":"https://github.com/advisories/GHSA-68hq-qrc4-w5h8"}],"sources":{"cve":[{"id":"CVE-2018-1000831","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","status":"published","published":"2018-12-20T15:00:00Z","modified":"2024-09-16T22:56:39.248Z","updated_at":"2026-11-02T14:35:10.685174Z"}],"euvd":[{"id":"EUVD-2018-2023","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","status":"published","published":"2018-12-20T15:00:00Z","modified":"2024-09-16T22:56:39Z","updated_at":"2026-11-03T00:54:58.273879Z"}],"ghsa":[{"id":"GHSA-68hq-qrc4-w5h8","title":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response...","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","status":"published","published":"2022-05-14T01:42:26Z","modified":"2023-02-02T05:04:22Z","cvss":[{"version":"3.0","score":10,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:51:51.17086Z"}],"nvd":[{"id":"CVE-2018-1000831","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","status":"published","published":"2018-12-20T15:29:01.377Z","modified":"2026-06-17T01:33:08.16Z","cvss":[{"version":"3.0","score":10,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:04:50.99633Z"}],"osv":[{"id":"CVE-2018-1000831","description":"K9Mail version \u003c= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.","status":"published","published":"2018-12-20T15:29:01.377Z","modified":"2026-10-20T10:49:54.7012576Z","cvss":[{"version":"3.0","score":10,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:07.641418Z"}]}}