CVE-2026-14666
Description
A flaw in PostgreSQL allows users to bypass row-level security (RLS) due to incomplete tracking of user role and database ownership changes. Active sessions may continue using cached, outdated security policies, enabling unauthorized read or write access to data. Exploitation requires the attacker to understand the application's specific privilege removal configurations.
Statement
This vulnerability in PostgreSQL is of Moderate impact. It allows a low-privileged authenticated user to bypass row-level security policies due to stale cached plans, potentially leading to unauthorized data access or modification. Exploitation requires specific timing and an attacker to understand the application's privilege management and row security policy patterns, making it a complex attack.
Mitigation
To mitigate this issue, ensure that all active PostgreSQL sessions are terminated or restarted after any changes to role membership, role attributes, or database ownership that affect row-level security policies. This action forces the invalidation of stale cached security policies, preventing unauthorized data access. Note that terminating sessions will disrupt active user connections.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.2 | N/A | 4.2 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data
Frequently Asked Questions
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