{"id":"CVE-2026-116489","published":"2026-10-26T16:17:18.690","lastModified":"2026-10-26T18:39:42.503","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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-843"],"vendors":[],"products":[],"references":[{"url":"https://github.com/timescale/pgvectorscale","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/pull/280","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/releases/tag/0.9.1","tags":[]},{"url":"https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-unqualified-diskann-operator-classes","tags":[]}],"exploitRefs":[{"url":"https://github.com/timescale/pgvectorscale","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/pull/280","tags":[]},{"url":"https://github.com/timescale/pgvectorscale/releases/tag/0.9.1","tags":[]}],"hasPoc":true,"ai":null}