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

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HIGH

Type confusion in AWS pgcollection allows remote code execution

Published Sep 24, 2026

8.7

HIGH

CVSS 4.0

EPSS 0.65%

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.

Affected products

Vendor AWS Product Pgcollection Default
unaffected
- Version
  2.0.0
  Status
  affected
  Constraints
  <=2.1.1

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

AWS

Pgcollection

unaffected

Version	Status	Constraints
2.0.0	affected	<=2.1.1

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-843

References (4)

https://aws.amazon.com/security/security-bulletins/2026-118-aws/
vendor-advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86406
Advisory
https://github.com/aws/pgcollection/releases/tag/v2.1.2
release-notespatch
https://github.com/aws/pgcollection/security/advisories/GHSA-g539-cj32-hv6r
third-party-advisory

Link	Providers	Tags
https://aws.amazon.com/security/security-bulletins/2026-118-aws/		vendor-advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86406		Advisory
https://github.com/aws/pgcollection/releases/tag/v2.1.2		release-notespatch
https://github.com/aws/pgcollection/security/advisories/GHSA-g539-cj32-hv6r		third-party-advisory