{"cve":"CVE-2026-116489","nvd":{"published":"2026-10-26T16:17:18.690","modified":"2026-10-26T16:17:18.690","status":"Received","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.","cvss_v4":{"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","score":7.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-843"],"references":["https://github.com/timescale/pgvectorscale","https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231","https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151","https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81"],"products":[],"source":"nvd","synced_at":"2026-10-26T16:34:44.474829350+00:00"},"epss":null,"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}