CVE-2026-2004— PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code
Quick assessment
Affected
n/a PostgreSQL
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
PostgreSQL是PostgreSQL组织的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性，例如外键、触发器、视图等。 PostgreSQL 18.2之前版本、17.8之前版本、16.12之前版本、15.16之前版本和14.21之前版本存在安全漏洞，该漏洞源于intarray扩展选择性估计器函数缺少输入类型验证，可能导致执行任意代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | PostgreSQL | 18< 18.2 |
affected |
17< 17.8 |
affected | ||
16< 16.12 |
affected | ||
15< 15.16 |
affected | ||
< 14.21 |
affected |
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I. Basic Information for CVE-2026-2004
Vulnerability Information
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Vulnerability Title
PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code
Source: CVE Program / CVE List V5
Vulnerability Description
Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1287
Source: CVE Program / CVE List V5
Vulnerability Title
PostgreSQL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PostgreSQL是PostgreSQL组织的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性，例如外键、触发器、视图等。 PostgreSQL 18.2之前版本、17.8之前版本、16.12之前版本、15.16之前版本和14.21之前版本存在安全漏洞，该漏洞源于intarray扩展选择性估计器函数缺少输入类型验证，可能导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | PostgreSQL | 18 ~ 18.2 | - |
|
II. Public POCs for CVE-2026-2004
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2026-02-12 · 22 CVEs total
| CVE-2026-2006 | 8.8 HIGH | PostgreSQL missing validation of multibyte character length executes arbitrary code |
| CVE-2026-2005 | 8.8 HIGH | PostgreSQL pgcrypto heap buffer overflow executes arbitrary code |
| CVE-2026-2007 | 8.2 HIGH | PostgreSQL pg_trgm heap buffer overflow writes pattern onto server memory |
| CVE-2025-56647 | 6.5 MEDIUM | farm 安全漏洞 |
| CVE-2026-2327 | 5.3 MEDIUM | Markdown-It 安全漏洞 |
| CVE-2026-2003 | 4.3 MEDIUM | PostgreSQL oidvector discloses a few bytes of memory |
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V. Comments for CVE-2026-2004
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