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Vulnerabilities CVE-2026-14664

CVE-2026-14664

High
Open
TLP:CLEAR

PostgreSQL regexp heap buffer overflow executes arbitrary code

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Description

Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved unanticipated data growth when round-tripped through pg_wchar. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Details

CVSS Score
8.8
EPSS Score
0.60%

45.5th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Aug 13, 2026
Last Modified
Aug 14, 2026
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