{"schemaVersion":3,"id":"CVE-2018-11324","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered in Joomla! Core before 3.8.8. A long running background process, such as remote checks for core or extension updates, could create a race condition where a session that was expected to be destroyed would be recreated.","dates":{"published":"2018-05-22T15:00:00.000Z","modified":"2024-08-05T08:01:52.879Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.9,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.9,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01289,"percentile":0.69815,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":-0.02699999999999994,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01316},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01319,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01289,"percentile":0.69815}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01319,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01316,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01289,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01289,"percentile":0.69815}]},"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":[],"exploitCount":0,"weaknesses":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","description":"The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/362.html"}],"affected":[{"vendor":"joomla","product":"joomla\\!","name":"Joomla!","label":"joomla\\!","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.8.8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.8.8","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"joomla","label":"Joomla!","category":"server-app"}},"hubHref":"/vendor/joomla/joomla"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://developer.joomla.org/security-centre/735-20180507-core-session-deletion-race-condition.html","label":"developer.joomla.org/security-centre/735-20180507-core-session-deletion-race-condition.html","hostname":"developer.joomla.org","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/104274","label":"www.securityfocus.com/bid/104274","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"http://www.securitytracker.com/id/1040966","label":"www.securitytracker.com/id/1040966","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-05-22T15:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T08:01:52.879Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":24,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T20:34:40.204Z","stale":false,"partial":false}}