CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2026-116304 PostgreSQL parallel RECORD typmod use-after-free executes arbitrary code
High (8.8). EPSS 0.6% estimated probability of exploitation activity in the next 30 days.
On this page
Use after free in PostgreSQL coordination of anonymous RECORD type identifiers among parallel workers allows a database user to execute arbitrary code as the operating system user running the database, via causing one process to free a shared tuple descriptor while another process retains and later uses its address. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Severity
- EPSS
- 0.6% estimated probability of exploitation activity in the next 30 days; 49th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-12. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- Published
- Modified
- Assigned by
- PostgreSQL (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Fix and patched versions
- Debian, Red Hat, Alpine: fixed package versions per release
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Debian | 12 | postgresql-15 | no fix listed | DEBIAN-CVE-2026-116304 |
| Debian | 13 | postgresql-17 | 17.12-0+deb13u1 | DEBIAN-CVE-2026-116304 |
| Debian | 14 | postgresql-18 | no fix listed | DEBIAN-CVE-2026-116304 |
| Ubuntu | 20.04:LTS | postgresql-12 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | 22.04:LTS | postgresql-14 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | 24.04:LTS | postgresql-16 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | 26.04:LTS, 26.10 | postgresql-18 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | Pro:14.04:LTS | postgresql-9.3 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | Pro:16.04:LTS | postgresql-9.5 | no fix listed | UBUNTU-CVE-2026-116304 |
| Ubuntu | Pro:18.04:LTS | postgresql-10 | no fix listed | UBUNTU-CVE-2026-116304 |
| Red Hat | hummingbird:1 | libpq, libpq-devel | 0:18.7-0.1.hum1 | RHSA-2026:99821 |
| Alpine | v3.21, v3.22 | postgresql15 | 15.20-r0 | ALPINE-CVE-2026-116304 |
| Alpine | v3.21, v3.22, v3.23 and 1 more | postgresql16 | 16.16-r0 | ALPINE-CVE-2026-116304 |
| Alpine | v3.21, v3.22, v3.23 and 1 more | postgresql17 | 17.12-r0 | ALPINE-CVE-2026-116304 |
| Alpine | v3.23, v3.24 | postgresql18 | 18.7-r0 | ALPINE-CVE-2026-116304 |
| Azure Linux | 3 | postgresql | no fix listed | AZL-113681 |
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 Important.
Red Hat rates this vulnerability as Important because an authenticated database user can gain arbitrary code execution as the postgres system user, escalating beyond database permission controls without requiring administrative privileges. In standard Red Hat Enterprise Linux environments, PostgreSQL enables parallel query execution by default. A memory management issue in parallel worker communication allows an attacker who can run queries to corrupt shared worker state, compromising the confidentiality, integrity, and availability of the database server.
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.
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Hardened Images | libpq | Affected | |
| Red Hat Hardened Images | postgresql17 | Affected | |
| Red Hat Hardened Images | postgresql18 | Affected |
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-2026-116304.