How severe is CVE-2026-2004?

CVE-2026-2004 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-2004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2004?

CVE-2026-2004 affects Postgresql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-2004 have an EU (EUVD) identifier?

Yes. CVE-2026-2004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6183.

When was CVE-2026-2004 published?

CVE-2026-2004 was published on 2026-02-12 and last updated on 2026-06-30.

CVE-2026-2004

CVE-2026-2004 is a high-severity vulnerability in Postgresql with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6183
Weakness: CWE-1287
Affected product: Postgresql
Published: 2026-02-12
Last modified: 2026-06-30

Description

Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Frequently asked questions

What is CVE-2026-2004?: Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
How severe is CVE-2026-2004?: CVE-2026-2004 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-2004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2004?: CVE-2026-2004 affects Postgresql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-2004 have an EU (EUVD) identifier?: Yes. CVE-2026-2004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6183.
When was CVE-2026-2004 published?: CVE-2026-2004 was published on 2026-02-12 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*

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