CVE-2026-6638
HIGH EPSS 7.8%
Published May 14, 20261mo ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
Published May 14, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
7.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-89 SQL Injection Injection
Affected Products 3
| Vendor | Product | Version | Range |
|---|---|---|---|
| postgresql | postgresql | * | ≥16.0 – <16.14 |
| postgresql | postgresql | * | ≥17.0 – <17.10 |
| postgresql | postgresql | * | ≥18.0 – <18.4 |
References 1
- postgresql.org https://www.postgresql.org/support/security/CVE-2026-6638/
Remediation
- postgresql.org https://www.postgresql.org/support/security/CVE-2026-6638/