{"schemaVersion":3,"id":"CVE-2026-8854","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_mem_cache.","dates":{"published":"2026-05-26T16:58:11.497Z","modified":"2026-05-26T18:34:16.176Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0046,"percentile":0.3851,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.101,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00359},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0046,"percentile":0.3851}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00359,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0046,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0046,"percentile":0.3851}]},"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-825","name":"Expired Pointer Dereference","description":"The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/825.html"}],"affected":[{"vendor":"ibm","product":"http_server","name":"http server","label":"http_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 8.5.0, ≤ Interim Fix 002","noFixRecorded":false,"fixedIn":null},{"text":"9.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.5.0.0, < 8.5.5.30","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.0.0.0, < 9.0.5.29","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 8.5.0, ≤ Interim Fix 002 | 9.0 | ≥ 8.5.0.0, < 8.5.5.30 | ≥ 9.0.0.0, < 9.0.5.29","eol":null,"hubHref":"/vendor/ibm/http_server"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.ibm.com/support/pages/node/7274065","label":"www.ibm.com/support/pages/node/7274065","hostname":"www.ibm.com","tags":["Vendor Advisory","Patch"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-26T16:58:11.497Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-26T18:34:16.176Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T16:03:32.335Z","stale":false,"partial":false}}