CVE-2026-2004 | PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code

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.

Published: 2026-02-12 Last update: 2026-02-20 Assigner: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-2004 is rated Moderate Risk (41.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-2004

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 0.05% 0.06% +0.01%
2 2026-03-21 0.10% 0.05% -0.05%
3 2026-02-13 — 0.10% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-2004

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Weakness enumeration for CVE-2026-2004

OS Trackers for CVE-2026-2004

vendor priority summary link
alpine — CVE-2026-2004: 5 source package rows (postgresql, postgresql15, postgresql16, postgresql17, postgresql18); 12 state rows across 7 repos (3.20-main, 3.21-main, 3.22-main, 3.23-community, 3.23-main, edge-community, edge-main); fixed 11, open 1. https://security.alpinelinux.org/vuln/CVE-2026-2004
debian not yet assigned CVE-2026-2004 not yet assigned priority: Debian including 4 source packages (postgresql-13, postgresql-15, postgresql-17, postgresql-18), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-2004
redhat high — https://access.redhat.com/security/cve/CVE-2026-2004
suse high CVE-2026-2004 severity important: SUSE including 346 source package names (2.2.1-5.40:grub2-2.12-slfo.1.1_2.1, 2.2.1-5.40:grub2-i386-pc-2.12-slfo.1.1_2.1, …), 1251 product×package rows across 73 product lines (Container suse/manager/5.0/x86_64/server, Container suse/manager/5.0/x86_64/server-migration-14-16, … (73 product lines)): Fixed 1204, First Fixed 47. https://www.suse.com/security/cve/CVE-2026-2004/
ubuntu medium CVE-2026-2004 medium priority: Ubuntu including 8 source packages (postgresql-10, postgresql-12, …), 36 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): DNE 21, needs-triage 7, ignored 4, released 3, deferred 1. https://ubuntu.com/security/CVE-2026-2004

Affected software / configurations for CVE-2026-2004

Vendor Product Version Raw CPE
postgresql postgresql >= 14.0, < 14.21 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 15.0, < 15.16 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 16.0, < 16.12 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 17.0, < 17.8 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 18.0, < 18.2 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*

References for CVE-2026-2004

cvelogic Threat Intelligence