{"id":"CVE-2026-116489","aliases":[],"cve":{"records":[{"id":"CVE-2026-116489","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-26T11:37:39.154Z","published":"2026-10-26T14:59:38.170Z","modified":"2026-10-26T14:59:38.170Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-26T14:59:38.170Z"}],"references":[{"url":"https://github.com/timescale/pgvectorscale/pull/280","tags":["issue-tracking","patch"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale/releases/tag/0.9.1","tags":["release-notes"],"source":"VulnCheck"},{"url":"https://github.com/timescale/pgvectorscale","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-unqualified-diskann-operator-classes","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-843","description":"Access of Resource Using Incompatible Type ('Type Confusion')","source":"VulnCheck"}],"applicability":[],"prioritization":[]},"title":"Timescale pgvectorscale before 0.9.1 Type Confusion via Unqualified DiskANN Operator Classes","titleSource":"VulnCheck","descriptionSource":"VulnCheck","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.","score":7.7,"severity":"high","published":"2026-10-26T14:59:38.170Z","modified":"2026-10-26T14:59:38.170Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"timescale","name":"pgvectorscale","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"0.9.1","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116489"}],"remediation":[],"references":["https://github.com/timescale/pgvectorscale/pull/280","https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81","https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa","https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd","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/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253","https://github.com/timescale/pgvectorscale/releases/tag/0.9.1","https://github.com/timescale/pgvectorscale","https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-unqualified-diskann-operator-classes"],"sources":[{"name":"CVE","id":"CVE-2026-116489","modified":"2026-10-26T14:59:38.170Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116489"}],"assessments":[{"source":"VulnCheck","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},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:35:07.744Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T11:20:32.820Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Timescale pgvectorscale before 0.9.1 has a type confusion vulnerability, allowing low-privileged database users with CREATE privilege to corrupt memory. This can disclose memory, crash the server, or escalate privileges. Attackers can exploit this by pre-creating shadow objects and building DiskANN indexes over crafted values.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:43:47.708Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116489"}]}}