{"id":"CVE-2026-23918","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-23918","generatedAt":"2026-10-31T04:55:15.599Z","title":"Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol.","description":"Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol.\n\nThis issue affects Apache HTTP Server: 2.4.66.\n\nUsers are recommended to upgrade to version 2.4.67, which fixes the issue.","published":"2026-05-04T15:16:04.000Z","lastModified":"2026-10-26T19:10:00.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-415","CWE-1341"],"affected":["apache/http server"],"epss":{"score":0.49727,"percentile":0.98894,"date":"2026-10-30","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2026-05-26","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52577,"kind":"exploit","title":"Apache HTTP Server 2.4.66 - 'mod_http2' Double-Free Denial of Service","url":"https://www.exploit-db.com/exploits/52577","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/52577.py","file":"exploits/multiple/webapps/52577.py","published":"2026-05-26","added":"2026-05-26","updated":"2026-05-26","author":"alisunbul","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2026-23918"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 49.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://httpd.apache.org/security/vulnerabilities_24.html","tags":["Vendor Advisory"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/04/19","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2026:13938","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-23918","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2465304","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23918","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."}