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CVE-2026-18893VulnerabilityPublished

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

Source GCVE Database

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Authoritative record:CVE-2026-18893· High 7.1

Not known to be exploited · CVSS 7.1 High.

Data as of 9 Nov 2026, 00:19 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.17.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
IBMCockroachDB PostgreSQL for IBM VPCAffected
  • >=26.2.0 <=26.2.3
  • >=25.4.0 <=25.4.12
  • >=25.2.0 <=25.2.20
Fixed in–
Mavencom.ibm/cockroachdb-postgresql-for-ibm-vpcpkg:maven/com.ibm/cockroachdb-postgresql-for-ibm-vpcOther threatsAffected
  • 25.2.0 <=25.2.20
  • 25.4.0 <=25.4.12
  • 26.2.0 <=26.2.3
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, restrict user privileges to the minimum necessary and monitor for suspicious use of user-defined functions.

Description

IBM CockroachDB PostgreSQL for IBM VPC versions 26.2.0 through 26.2.3, 25.4.0 through 25.4.12, and 25.2.0 through 25.2.20 contain a vulnerability that allows privilege escalation via user-defined functions. This vulnerability has a high severity score of 7.1 and impacts confidentiality and integrity without affecting availability. No patch or remediation information is provided in the available data.

References

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