{"id":"CVE-2026-116489","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-116489","generatedAt":"2026-10-28T03:41:54.390Z","title":"Timescale pgvectorscale before 0.9.1 contains a type confusion vulnerability that allows low-privileged database users to corrupt memory by shadowing pgvector's vector type or operators.","description":"Timescale pgvectorscale before 0.9.1 contains a type confusion vulnerability that allows low-privileged database users to corrupt memory by shadowing pgvector's vector type or operators. Attackers with CREATE privilege on the vectorscale schema can pre-create shadow objects, then build and query DiskANN indexes over crafted values to cause out-of-bounds reads and writes, disclosing memory, crashing the server, or escalating privileges.","published":"2026-10-26T16:17:19.000Z","lastModified":"2026-10-26T18:39:43.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":7.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-843"],"affected":[],"epss":{"score":0.00498,"percentile":0.42477,"date":"2026-10-27","history":[{"date":"2026-10-27","score":0.00498,"percentile":0.42477}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T16:17:19.000Z","detail":{"score":"7.7","severity":"HIGH","publishedAt":"2026-10-26T16:17:18.690Z"},"summary":"New CVE, high severity (CVSS 7.7)."}],"references":[{"url":"https://github.com/timescale/pgvectorscale","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/pull/280","source":"disclosure@vulncheck.com"},{"url":"https://github.com/timescale/pgvectorscale/releases/tag/0.9.1","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-unqualified-diskann-operator-classes","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-116489","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."}