{"schemaVersion":3,"id":"CVE-2018-16887","aliases":["GHSA-mhhc-r88h-2qrm"],"status":"published","duplicateOf":null,"title":null,"description":"A cross-site scripting (XSS) flaw was found in the katello component of Satellite. An attacker with privilege to create/edit organizations and locations is able to execute a XSS attacks against other users through the Subscriptions or the Red Hat Repositories wizards. This can possibly lead to malicious code execution and extraction of the anti-CSRF token of higher privileged users. Versions before 3.9.0 are vulnerable.","dates":{"published":"2019-01-13T02:00:00.000Z","modified":"2024-08-05T10:39:57.671Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":3.5,"severity":"low","vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Rubygems","score":5.4,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":5.9,"impact":4.5,"computed":true}]},"epss":{"probability":0.00999,"percentile":0.62203,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00999},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00999,"percentile":0.62203}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00999,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00999,"percentile":0.62203}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_7BF2B8EA46E78793","name":"Exploit Reference (bugzilla.redhat.com)","source":"reference","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16887","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"RubyGems","product":"katello","name":"katello","label":"katello","ecosystem":"RubyGems","cpePart":null,"purl":"pkg:gem/katello","purlType":"gem","versions":[{"text":"< 3.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.9.0","eol":null,"hubHref":null},{"vendor":"redhat","product":"satellite","name":"satellite","label":"satellite","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"6.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.0","eol":null,"hubHref":"/vendor/redhat/satellite"},{"vendor":"the katello project","product":"katello","name":"katello","label":"katello","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"3.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"3.9.0","eol":null,"hubHref":"/vendor/the_katello_project/katello"},{"vendor":"theforeman","product":"katello","name":"katello","label":"katello","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.9.0","eol":null,"hubHref":"/vendor/theforeman/katello"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16887","label":"bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16887","hostname":"bugzilla.redhat.com","tags":["X Refsource CONFIRM","Exploit","Issue Tracking","Patch","Third Party Advisory","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2019:1222","label":"access.redhat.com/errata/RHSA-2019:1222","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16887","label":"nvd.nist.gov/vuln/detail/CVE-2018-16887","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/Katello/katello","label":"github.com/Katello/katello","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/katello/CVE-2018-16887.yml","label":"github.com/rubysec/ruby-advisory-db/blob/master/gems/katello/CVE-2018-16887.yml","hostname":"github.com","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":["RHSA-2019:1222"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2019-01-13T02:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T10:39:57.671Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T18:13:11.223Z","stale":false,"partial":false}}