{"id":"CVE-2026-18022","title":"pgvector: pgvector: Arbitrary Code Execution via Integer Wraparound (CVE-2026-18022)","summary":"A flaw was found in pgvector. An integer wraparound vulnerability exists during the IVFFlat index build process. This flaw allows a database user on a 32-bit system to write data outside of allocated memory buffers. Successful exploitation…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":["CWE-787","CWE-190"],"vendor":"Red Hat","product":"pgvector","affected":["pgvector < 0.8.6"],"published":"2026-07-29","updated":"2026-10-15","sourceUpdated":"2026-10-15T10:44:04+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18022.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18022.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-18022"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2508603"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18022"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18022"},{"url":"https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104"},{"url":"https://github.com/pgvector/pgvector/issues/1006"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00601,"epssPercentile":0.4853,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-30T00:00:00+00:00"},"ingestedAt":"2026-10-07T03:28:55.184Z","slug":"CVE-2026-18022","body":"## Overview\n\nA flaw was found in pgvector. An integer wraparound vulnerability exists during the IVFFlat index build process. This flaw allows a database user on a 32-bit system to write data outside of allocated memory buffers. Successful exploitation could lead to arbitrary code execution.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18022.json)\n\n**pgvector: pgvector: Arbitrary Code Execution via Integer Wraparound** — rated Important by Red Hat. Released 2026-07-29, updated 2026-10-15.\n\nNot affected:\n\n- Lightspeed Core\n- OpenShift Lightspeed\n- Red Hat Ansible Automation Platform 2\n- Red Hat Enterprise Linux 9\n- Red Hat Trusted Profile Analyzer\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}