CVE-2026-18893
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Privilege Escalation in IBM CockroachDB PostgreSQL for IBM VPC
Vulnerability report for CVE-2026-18893, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-08
Last updated on: 2026-11-08
Assigner: IBM Corporation
Description
Description
IBM CockroachDB PostgreSQL for IBM VPC 26.2.0 through 26.2.3, 25.4.0 through 25.4.12, and 25.2.0 through 25.2.20 is vulnerable to privilege escalation via user-defined function.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| IBM | CockroachDB PostgreSQL for IBM VPC | From 26.2.0 (inc) to 26.2.3 (inc) |
| IBM | CockroachDB PostgreSQL for IBM VPC | From 25.4.0 (inc) to 25.4.12 (inc) |
| IBM | CockroachDB PostgreSQL for IBM VPC | From 25.2.0 (inc) to 25.2.20 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-269 | The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. |
