{"id":"CVE-2018-6654","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-6654","generatedAt":"2026-10-29T01:55:19.093Z","title":"The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an 'action: \"user\"' request to iframe.gr_-ifr, because the exposure of these tokens is not restricted to any specific web site.","description":"The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an 'action: \"user\"' request to iframe.gr_-ifr, because the exposure of these tokens is not restricted to any specific web site.","published":"2018-02-06T01:29:00.000Z","lastModified":"2026-06-17T02:02:09.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-346"],"affected":["grammarly/grammarly"],"epss":{"score":0.00506,"percentile":0.42977,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1527","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1527","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-6654","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}