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High ALSA-2026:88360 1 CVE

Important: postgresql18-pgvector security update

Published Oct 22, 2026 · Updated Oct 29, 2026

Summary

Open-source vector similarity search for Postgres. Supports L2 distance, inner product, and cosine distance

Security Fix(es):

* pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build (CVE-2026-103484)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
AlmaLinux · 10 postgresql18-pgvector 0.8.7-1.el10_2

Vulnerabilities 1

  • High 8.8

    pgvector buffer overflow in IVFFlat index build

    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.

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-103484
  • report
    https://bugzilla.redhat.com/2544842
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-88360.html