CVE-2026-103484
pgvector buffer overflow in IVFFlat index build
02 Description
pgvector buffer overflow in IVFFlat index build
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.42% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 36.3% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-02.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-01 19:49Z27 DAYS AGO
- Last updated
- 2026-10-01 19:58Z27 DAYS AGO
- Reserved
- 2026-09-30
- Assigning CNA
- PostgreSQL
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 99dd3fb7d2871fc30114a08b2606d25795f124d995101b638a7f49d9a4907e11
05 Affected products
06 References
07 Fixed in
AlmaLinux 9
- pg_repack Fixed
A version is affected if any line below covers it.
- Affected before 1.5.1-1.module_el9.6.0+146+c54fdeca
- Affected before 1.5.3-1.module_el9.8.0+234+5456f35d
- pgaudit Fixed
A version is affected if any line below covers it.
- Affected before 16.0-1.module_el9.4.0+66+eb9878bc
- Affected before 18.0-1.module_el9.8.0+234+5456f35d
- pgvector Fixed
A version is affected if any line below covers it.
- Affected before 0.8.7-1.module_el9.8.0+324+0cb93d9d
- Affected before 0.8.7-1.module_el9.8.0+325+9e644128
- postgis Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-client Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-docs Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-upgrade Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-utils Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgres-decoderbufs Fixed
A version is affected if any line below covers it.
- Affected before 2.4.0-1.Final.module_el9.4.0+66+eb9878bc
- Affected before 3.3.1-1.Final.module_el9.8.0+234+5456f35d
- postgresql Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-contrib Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-docs Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-plperl Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-plpython3 Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-pltcl Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-private-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-private-libs Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-server Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-server-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-static Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-test Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-test-rpm-macros Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-upgrade Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-upgrade-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 10
- pgvector Fixed in 0.8.7-1.el10_2
- postgresql18-pgvector Fixed in 0.8.7-1.el10_2
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- pg_repack Fixed
A version is affected if any line below covers it.
- Affected before 1.5.1-1.module_el9.6.0+146+c54fdeca
- Affected before 1.5.3-1.module_el9.8.0+234+5456f35d
- pgaudit Fixed
A version is affected if any line below covers it.
- Affected before 16.0-1.module_el9.4.0+66+eb9878bc
- Affected before 18.0-1.module_el9.8.0+234+5456f35d
- pgvector Fixed
A version is affected if any line below covers it.
- Affected before 0.8.7-1.module_el9.8.0+324+0cb93d9d
- Affected before 0.8.7-1.module_el9.8.0+325+9e644128
- postgis Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-client Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-docs Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-upgrade Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgis-utils Fixed
A version is affected if any line below covers it.
- Affected before 3.5.3-6.module_el9.8.0+311+c39b793b
- Affected before 3.6.1-4.module_el9.8.0+310+22372bcc
- postgres-decoderbufs Fixed
A version is affected if any line below covers it.
- Affected before 2.4.0-1.Final.module_el9.4.0+66+eb9878bc
- Affected before 3.3.1-1.Final.module_el9.8.0+234+5456f35d
- postgresql Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-contrib Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-docs Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-plperl Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-plpython3 Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-pltcl Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-private-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-private-libs Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-server Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-server-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-static Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-test Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-test-rpm-macros Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-upgrade Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
- postgresql-upgrade-devel Fixed
A version is affected if any line below covers it.
- Affected before 16.15-1.module_el9.8.0+311+c39b793b
- Affected before 18.6-1.module_el9.8.0+310+22372bcc
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 10
- pgvector Fixed in 0.8.7-1.el10_2
- postgresql18-pgvector Fixed in 0.8.7-1.el10_2
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- pgvector No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- pgvector Fixed in 0.8.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- pgvector No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- pgvector No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- pgvector No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.