CVE-2026-18022: Integer Overflow or Wraparound in pgvector
CVE-2026-18022 is an integer wraparound vulnerability in the IVFFlat index build component of pgvector versions prior to 0.8.6. This flaw allows a database user on 32-bit systems to write data out-of-bounds, potentially leading to arbitrary code execution. The vulnerability has a high severity score of 8.8 and requires low attack complexity with privileges. No official patch or remediation level is currently confirmed.
AI Analysis
Technical Summary
An integer overflow or wraparound occurs in the IVFFlat index build process of pgvector before version 0.8.6. This vulnerability affects only 32-bit systems and allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. The CVSS 3.1 score is 8.8, indicating high impact on confidentiality, integrity, and availability. There is no vendor advisory or patch link provided, and the remediation level is not specified.
Potential Impact
Successful exploitation can lead to arbitrary code execution by a database user on affected 32-bit systems, compromising confidentiality, integrity, and availability of the database system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor for official updates from the pgvector maintainers and apply patches once available. Until then, consider restricting database user privileges on 32-bit systems to limit potential exploitation.
CVE-2026-18022: Integer Overflow or Wraparound in pgvector
Description
CVE-2026-18022 is an integer wraparound vulnerability in the IVFFlat index build component of pgvector versions prior to 0.8.6. This flaw allows a database user on 32-bit systems to write data out-of-bounds, potentially leading to arbitrary code execution. The vulnerability has a high severity score of 8.8 and requires low attack complexity with privileges. No official patch or remediation level is currently confirmed.
CVSS v3.1
Score 8.8high
Affected software
pgvector
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer overflow or wraparound occurs in the IVFFlat index build process of pgvector before version 0.8.6. This vulnerability affects only 32-bit systems and allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. The CVSS 3.1 score is 8.8, indicating high impact on confidentiality, integrity, and availability. There is no vendor advisory or patch link provided, and the remediation level is not specified.
Potential Impact
Successful exploitation can lead to arbitrary code execution by a database user on affected 32-bit systems, compromising confidentiality, integrity, and availability of the database system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor for official updates from the pgvector maintainers and apply patches once available. Until then, consider restricting database user privileges on 32-bit systems to limit potential exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-28T00:20:11.430Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6a53159c2644c7f8f0f0f2
Added to database: 07/29/2026, 19:23:01 UTC
Last enriched: 08/06/2026, 17:07:02 UTC
Last updated: 09/12/2026, 22:01:32 UTC
Views: 81
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