{"api_version":"1","generated_at":"2026-07-24T19:42:09+00:00","cve":"CVE-2018-1000855","urls":{"html":"https://cve.report/CVE-2018-1000855","api":"https://cve.report/api/cve/CVE-2018-1000855.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2018-1000855","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000855"},"summary":{"title":"CVE-2018-1000855","description":"easymon version 1.4 and earlier contains a Cross Site Scripting (XSS) vulnerability in Endpoint where monitoring is mounted that can result in Reflected XSS that affects Firefox. Can be used to steal cookies, depending on the cookie settings.. This attack appear to be exploitable via The victim must click on a crafted URL that contains the XSS payload. This vulnerability appears to have been fixed in 1.4.1 and later.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2018-12-20 17:29:00","updated_at":"2019-10-30 18:22:00"},"problem_types":["CWE-79"],"metrics":[],"references":[{"url":"https://github.com/basecamp/easymon/issues/26","name":"https://github.com/basecamp/easymon/issues/26","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"Possible reflected XSS in Firefox when fetching an invalid check name · Issue #26 · basecamp/easymon · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/basecamp/easymon/pull/25","name":"https://github.com/basecamp/easymon/pull/25","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"Remove unescaped check name from not-found output by anoldguy · Pull Request #25 · basecamp/easymon · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1000855","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000855","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2018","cve_id":"1000855","vulnerable":"1","versionEndIncluding":"1.4","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"basecamp","cpe5":"easymon","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"ruby","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","DATE_ASSIGNED":"2018-12-05T14:18:48.093768","DATE_REQUESTED":"2018-11-19T08:38:18","ID":"CVE-2018-1000855","REQUESTER":"rosa@basecamp.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"easymon version 1.4 and earlier contains a Cross Site Scripting (XSS) vulnerability in Endpoint where monitoring is mounted that can result in Reflected XSS that affects Firefox. Can be used to steal cookies, depending on the cookie settings.. This attack appear to be exploitable via The victim must click on a crafted URL that contains the XSS payload. This vulnerability appears to have been fixed in 1.4.1 and later."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://github.com/basecamp/easymon/pull/25","refsource":"MISC","url":"https://github.com/basecamp/easymon/pull/25"},{"name":"https://github.com/basecamp/easymon/issues/26","refsource":"MISC","url":"https://github.com/basecamp/easymon/issues/26"}]}},"nvd":{"publishedDate":"2018-12-20 17:29:00","lastModifiedDate":"2019-10-30 18:22:00","problem_types":["CWE-79"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:basecamp:easymon:*:*:*:*:*:ruby:*:*","versionEndIncluding":"1.4","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2018","CveId":"1000855","Ordinal":"140641","Title":"CVE-2018-1000855","CVE":"CVE-2018-1000855","Year":"2018"},"notes":[{"CveYear":"2018","CveId":"1000855","Ordinal":"1","NoteData":"easymon version 1.4 and earlier contains a Cross Site Scripting (XSS) vulnerability in Endpoint where monitoring is mounted that can result in Reflected XSS that affects Firefox. Can be used to steal cookies, depending on the cookie settings.. This attack appear to be exploitable via The victim must click on a crafted URL that contains the XSS payload. This vulnerability appears to have been fixed in 1.4.1 and later.","Type":"Description","Title":null},{"CveYear":"2018","CveId":"1000855","Ordinal":"2","NoteData":"2018-12-20","Type":"Other","Title":"Published"}]}}}