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No exploitation reportedAwaiting NVD analysis

CVE-2026-18893

CockroachDB PostgreSQL for IBM VPC is affected by multiple vulnerabilities

No exploitation reported by the sources we read.

  • Published2026-11-08
  • WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0818:08CVE publishedCNA

Versions per branch

Products declared by the CNA

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • IBM CockroachDB PostgreSQL for IBM VPC
    Affected
    • ≥ 26.2.0, ≤ 26.2.3no fix statedsemver
    • ≥ 25.4.0, ≤ 25.4.12no fix statedsemver
    • ≥ 25.2.0, ≤ 25.2.20no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-08

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-18893 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.12026-11-08
  • NVDCVSS 3.17.1read 2026-11-08
  • CNAweakness (CWE)CWE-2692026-11-08
  • NVDweakness (CWE)CWE-269read 2026-11-08

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2026-11-08
Last Modified
2026-11-08
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-18893?

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.

Is CVE-2026-18893 actively exploited?

Active exploitation of CVE-2026-18893 has not been confirmed.

What is the CVSS score for CVE-2026-18893?

CVE-2026-18893 has a CVSS v3 base score of 7.1 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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