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CVE-2026-96883— Type confusion in AWS pgcollection allows remote code execution

Quick assessment

Affected
AWS pgcollection
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.

pgcollection 是 PostgreSQL 的一个开源扩展。AWS pgcollection 2.0.0 至 2.1.1 版本中存在类型混淆漏洞，攻击者可通过精心构造的 SQL 语句利用集合值检索和数组转换函数中不匹配的类型元数据，在已认证远程用户身份下以 postgres 操作系统用户权限执行任意代码。 为修复此问题，建议用户升级至 2.1.2 或更高版本。

CVSS 8.8 · High EPSS 0.65% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS pgcollection 2.0.0≤ 2.1.1 affected
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I. Basic Information for CVE-2026-96883

Vulnerability Information
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Vulnerability Title
Type confusion in AWS pgcollection allows remote code execution
Source: CVE Program / CVE List V5
Vulnerability Description
pgcollection is an open source extension to PostgreSQL. A type confusion issue in AWS pgcollection 2.0.0 through 2.1.1 might allow an authenticated remote user to execute arbitrary code as the postgres operating system user via crafted SQL statements that rely on mismatched type metadata in collection value retrieval and array conversion functions. To remediate this issue, users should upgrade to version 2.1.2 or later.
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
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS pgcollection 2.0.0 ~ 2.1.1 -

II. Public POCs for CVE-2026-96883

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III. Intelligence Information for CVE-2026-96883

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Vendor Advisories for CVE-2026-96883 (2)

Vendor Pages for CVE-2026-96883 (1)

IV. Related Vulnerabilities

Same vendor: AWS
Same weakness: CWE-843

V. Comments for CVE-2026-96883

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