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TI-2026-12368 Aliases CVE-2026-14676GHSA-8848-x36c-v99q

PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code

Priority MEDIUM 40CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.

Summary

Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix Fixed PostgreSQL: 18.6Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—PostgreSQL18 to before 18.618.6Patch availableCNA
  • PostgreSQL Vendor— Affected 18 to before 18.6 Fixed in 18.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*18.0 to before 18.5VulnerablePostgreSQL
  • cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* Versions 18.0 to before 18.5 Vulnerable ·PostgreSQL

Remediation

  • Fix · CNA PostgreSQL Fixed in 18.6

Red Hat 2 advisories

  • RHSA-2026:67848 Released 2026-09-16 · Red Hat rating Important
    postgresql:18 security update
    • Red Hat Enterprise Linux AppStream (v. 9) pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.aarch64::postgresql:18, pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.ppc64le::postgresql:18, pg_repack-1.5.3-1.module+el9.8.0+23739+1c42644c.s390x::postgresql:18 +47
  • RHSA-2026:67280 Released 2026-09-14 · Red Hat rating Important
    postgresql18 security update
    • Red Hat Enterprise Linux AppStream (v. 10) postgresql18-18.6-1.el10_2, postgresql18-contrib-18.6-1.el10_2, postgresql18-docs-18.6-1.el10_2 +10
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) postgresql18-test-rpm-macros-18.6-1.el10_2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    PostgreSQL 18.6

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-13578 PostgreSQL type confusion in pg_restore_attribute_stats() executes arbitrary codePriority MEDIUM 40
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:67280
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:67848
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:67280
Not affected: 7 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Self-service automation portal 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-14676
  2. 2026-10-03 Alias added: GHSA-8848-x36c-v99q

References

Advisory 1

  • TI-2019-06651 In PostgreSQL 9.3 through 11.2, the "COPY TO/FROM PROGRAM" function allows superusers and… CVSS 3.0HIGH 7.2
  • TI-2017-05187 Improper authentication in postgresql CVSS 3.0CRITICAL 9.8
  • TI-2020-15711 SQL injection in postgresql CVSS 3.1HIGH 8.8
  • TI-2013-01675 Argument injection vulnerability in PostgreSQL 9.2.x before 9.2.4, 9.1.x before 9.1.9… CVSS 2.0MEDIUM 6.5
  • TI-2007-03176 The Database Link library (dblink) in PostgreSQL 8.1 implements functions via CREATE… CVSS 2.0HIGH 9.0
  • TI-2022-01423 SQL injection in postgresql CVSS 3.1HIGH 8.8
See all 202 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences