CVE-2026-103484
pgvector buffer overflow in IVFFlat index build
n/a pgvector
CVSS
8.8HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.42%Chance of exploitation activity in the next 30 days, higher than 35% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 0.8.7pgvectorCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.
Text from CVE List
Affected versions 1
- pgvectoraffected: all versions before 0.8.7CVE List