CVE-2026-32286
Description
A flaw was found in the DataRow.Decode function within the github.com/jackc/pgproto3/v2 component. A malicious or compromised PostgreSQL server can exploit this by sending a DataRow message containing a negative field length. This improper validation of field lengths leads to a "slice bounds out of range panic", resulting in a Denial of Service (DoS) for the affected application.
Statement
The PostgreSQL server multicluster-globalhub-manager connects to is either provisioned by the operator itself or specified by the admin managing the deployment. To successfully exploit the vulnerability in this context the attacker would need to compromise the operator-deployed PostgreSQL server to force a crafted malicious DataRow message or they would need to have the privileges required to modify the operator-provisioned deployment or configure globalhub-manager to use a compromised/malicious “BYO Postgres” server.
The first scenario (compromising a legitimate PostgreSQL server) would change Attack Complexity from Low to High resulting in an adjusted CVSS v3.1 score of 5.9 (Moderate) The other scenarios (manipulating the operator provisioned-deployment or configuring the globalhub-manager to use a malicious server) would maintain AC:L but would require privileged access. This would change Privileges Required from None to High resulting in an adjusted CVSS v3.1 score of 4.9 (Moderate)
Based on the above the Impact Rating for multicluster-globalhub-manager-rhel9 is Moderate.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
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