Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/timescale/pgvectorscale
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_m
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_m
- https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_m
- https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f6
- https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d2
- https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3
- https://github.com/timescale/pgvectorscale/pull/280
- https://github.com/timescale/pgvectorscale/releases/tag/0.9.1
- https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-c
FAQ
What is CVE-2026-116489?
CVE-2026-116489 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 wit...
How severe is CVE-2026-116489?
CVE-2026-116489 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116489?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.