RewindexCVEsTimescale (Tiger Data)
CVE-2026-116489: Timescale pgvectorscale before 0.9.1 Type Confusion via Unqualified DiskANN Operator Classes
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.
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H · CWE-843
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
timescale: pgvectorscale
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/timescale/pgvectorscale (opens in new tab)
- github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/bu… (opens in new tab)
- github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mo… (opens in new tab)
- github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg… (opens in new tab)
- github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f… (opens in new tab)
- github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cf… (opens in new tab)
- github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51… (opens in new tab)
- github.com/timescale/pgvectorscale/pull/280 (opens in new tab)
- github.com/timescale/pgvectorscale/releases/tag/0.9.1 (opens in new tab)
- www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-un… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)