--- title: "CVE-2026-103484: pgvector - Buffer Overflow" description: "pgvector < 0.8.7 contains a buffer overflow caused by out-of-bounds write in IVFFlat index build, letting database users execute arbitrary code, exploit requires database user privileges." url: https://panop.io/threat-heartbeat/CVE-2026-103484/ --- # CVE-2026-103484 pgvector - Buffer Overflow pgvector < 0.8.7 contains a buffer overflow caused by out-of-bounds write in IVFFlat index build, letting database users execute arbitrary code, exploit requires database user privileges. CVSS base score 8.8 /10 High CISA KEV Not listed Public exploit None known Authentication Required EPSS 0.42% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103484) ## Details Type Buffer Overflow Impact Remote Code Execution CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Published 1 October 2026 Updated 15 October 2026 Weakness [CWE-787](https://cwe.mitre.org/data/definitions/787.html) ## Vendor fix Upgrade to version 0.8.7 or later. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-103484](https://nvd.nist.gov/vuln/detail/CVE-2026-103484) - [https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156](https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156) - [https://github.com/pgvector/pgvector/issues/1036](https://github.com/pgvector/pgvector/issues/1036) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)