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CVE-2026-116311 PostgreSQL DROP OWNED can remove restrictive row security policies from non-owned tables

5.4 mediumEPSS 0.2%

Medium (5.4). EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

On this page
Missing authorization in PostgreSQL DROP OWNED allows a role to remove itself from restrictive row level security policies, thereby reading or modifying rows that the policy was intended to deny, via queries after the DROP OWNED. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Severity

CVSS 3.1

5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
0.2% estimated probability of exploitation activity in the next 30 days; 14th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-862 Missing Authorization
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
PostgreSQL (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Fix and patched versions

Linux distributions

DistributionReleasePackageFixed inAdvisory
Debian12postgresql-15no fix listedDEBIAN-CVE-2026-116311
Debian13postgresql-1717.12-0+deb13u1DEBIAN-CVE-2026-116311
Debian14postgresql-18no fix listedDEBIAN-CVE-2026-116311
Ubuntu20.04:LTSpostgresql-12no fix listedUBUNTU-CVE-2026-116311
Ubuntu22.04:LTSpostgresql-14no fix listedUBUNTU-CVE-2026-116311
Ubuntu24.04:LTSpostgresql-16no fix listedUBUNTU-CVE-2026-116311
Ubuntu26.04:LTS, 26.10postgresql-18no fix listedUBUNTU-CVE-2026-116311
UbuntuPro:14.04:LTSpostgresql-9.3no fix listedUBUNTU-CVE-2026-116311
UbuntuPro:16.04:LTSpostgresql-9.5no fix listedUBUNTU-CVE-2026-116311
UbuntuPro:18.04:LTSpostgresql-10no fix listedUBUNTU-CVE-2026-116311
Red Hathummingbird:1libpq, libpq-devel0:18.7-0.1.hum1RHSA-2026:99821
Alpinev3.21, v3.22postgresql1515.20-r0ALPINE-CVE-2026-116311
Alpinev3.21, v3.22, v3.23 and 1 morepostgresql1616.16-r0ALPINE-CVE-2026-116311
Alpinev3.21, v3.22, v3.23 and 1 morepostgresql1717.12-r0ALPINE-CVE-2026-116311
Alpinev3.23, v3.24postgresql1818.7-r0ALPINE-CVE-2026-116311
Azure Linux3postgresqlno fix listedAZL-113696

From the distributions' data via OSV.dev: the Debian Security Tracker; Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0; Red Hat Security Data © Red Hat, Inc., CC BY 4.0; the Alpine secdb, CC BY-SA 4.0; Microsoft's Azure Linux vulnerability data, MIT. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Debian · Ubuntu · Red Hat · Alpine.

Red Hat

Red Hat rates this Moderate.

Red Hat's statement

This vulnerability is rated as a Moderate impact issue for Red Hat products because successful exploitation requires an authenticated database user with existing connection privileges and specifically targets environments enforcing restrictive row-level security (RLS) policies. While an authenticated role can circumvent these restrictive rules to access or alter protected table rows, the flaw does not grant database superuser privileges or compromise the underlying host system. Typical PostgreSQL deployments that do not rely on restrictive row-level security for multi-tenant data separation are not exposed to this risk.

Red Hat's mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ProductPackageStateAdvisory
Red Hat Hardened ImageslibpqAffected
Red Hat Hardened Imagespostgresql17Affected
Red Hat Hardened Imagespostgresql18Affected

Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-116311.

Attack patterns (CAPEC)

  • CAPEC-665 Exploitation of Thunderbolt Protection Flaws Likelihood: Low · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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