{"id":"CVE-2026-17591","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-17591","generatedAt":"2026-10-28T04:34:48.865Z","title":"An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released.","description":"A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.","published":"2026-10-16T23:17:01.000Z","lastModified":"2026-10-19T22:17:10.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":3.6,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L"},"cwe":["CWE-416"],"affected":[],"epss":{"score":0.00154,"percentile":0.04432,"date":"2026-10-27","history":[{"date":"2026-10-17","score":0.00109,"percentile":0.01167}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T23:17:01.000Z","detail":{"score":"3.6","severity":"LOW","publishedAt":"2026-10-16T23:17:01.420Z"},"summary":"New CVE, low severity (CVSS 3.6)."}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:77775","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-17591","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554209","source":"secalert@redhat.com"},{"url":"https://github.com/libarchive/libarchive/pull/3318","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-17591","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."}