8.8

CVE-2026-6637

PostgreSQL refint allows stack buffer overflow and SQL injection

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database.  A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column.  In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellern/a
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Produkt PostgreSQL
Default Statusunaffected
Version 18
Version < 18.4
Status affected
Version 17
Version < 17.10
Status affected
Version 16
Version < 16.14
Status affected
Version 15
Version < 15.18
Status affected
Version 0
Version < 14.23
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.118
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-121 Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.