CVE-2026-14664 Details
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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.postgresql.org/support/security/CVE-2026-14664/ | PostgreSQL | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | PostgreSQL |
Affected Products
| Product | Versions |
|---|---|
| postgresql postgresql | >= 14.0, < 14.24 >= 15.0, < 15.19 >= 16.0, < 16.15 >= 17.0, < 17.11 >= 18.0, < 18.5 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 29, 2026 | CVE Modified | PostgreSQL |
| Aug 19, 2026 | Initial Analysis | [email protected] |
| Aug 14, 2026 | CVE Modified | CISA-ADP |
| Aug 13, 2026 | CVE Modified | CISA-ADP |
| Aug 13, 2026 | New CVE Received | PostgreSQL |