# CVE-2023-5868: Postgresql: memory disclosure in aggregate function calls

Status: published. Published: 2023-12-10. Updated: 2026-11-05.

A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.

## Remediation

- workaround: 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. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Advanced Cluster Security 4.2 (advanced-cluster-security/rhacs-central-db-rhel8): ≥ 4.2.4-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Advanced Cluster Security 4.2 (advanced-cluster-security/rhacs-main-rhel8): ≥ 4.2.4-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Advanced Cluster Security 4.2 (advanced-cluster-security/rhacs-operator-bundle): ≥ 4.2.4-7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Advanced Cluster Security 4.2 (advanced-cluster-security/rhacs-scanner-db-rhel8): ≥ 4.2.4-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Advanced Cluster Security 4.2 (advanced-cluster-security/rhacs-scanner-db-slim-rhel8): ≥ 4.2.4-7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (postgresql:13): ≥ 8090020231114113712.a75119d5; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (postgresql:12): ≥ 8090020231128173330.a75119d5; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (postgresql:15): ≥ 8090020231114113548.a75119d5; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support (postgresql:12): ≥ 8020020231128165246.4cda2c84; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Service (postgresql:12): ≥ 8020020231128165246.4cda2c84; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions (postgresql:12): ≥ 8020020231128165246.4cda2c84; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support (postgresql:12): ≥ 8040020231127153301.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support (postgresql:13): ≥ 8040020231127154806.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service (postgresql:12): ≥ 8040020231127153301.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service (postgresql:13): ≥ 8040020231127154806.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions (postgresql:12): ≥ 8040020231127153301.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions (postgresql:13): ≥ 8040020231127154806.522a0ee4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support (postgresql:13): ≥ 8060020231114115246.ad008a3a; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support (postgresql:12): ≥ 8060020231128165328.ad008a3a; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support (postgresql:13): ≥ 8080020231114105206.63b34585; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support (postgresql:12): ≥ 8080020231128165335.63b34585; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support (postgresql:15): ≥ 8080020231113134015.63b34585; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (postgresql): ≥ 0:13.13-1.el9_3; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (postgresql:15): ≥ 9030020231120082734.rhel9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support (postgresql): ≥ 0:13.13-1.el9_0; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support (postgresql): ≥ 0:13.13-1.el9_2; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support (postgresql:15): ≥ 9020020231115020618.rhel9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-postgresql12-postgresql): ≥ 0:12.17-1.el7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-postgresql13-postgresql): ≥ 0:13.13-1.el7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-3.74-RHEL-8 (advanced-cluster-security/rhacs-central-db-rhel8): ≥ 3.74.8-9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-3.74-RHEL-8 (advanced-cluster-security/rhacs-main-rhel8): ≥ 3.74.8-9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-3.74-RHEL-8 (advanced-cluster-security/rhacs-operator-bundle): ≥ 3.74.8-7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-3.74-RHEL-8 (advanced-cluster-security/rhacs-scanner-db-rhel8): ≥ 3.74.8-9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-3.74-RHEL-8 (advanced-cluster-security/rhacs-scanner-db-slim-rhel8): ≥ 3.74.8-9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-4.1-RHEL-8 (advanced-cluster-security/rhacs-central-db-rhel8): ≥ 4.1.6-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-4.1-RHEL-8 (advanced-cluster-security/rhacs-main-rhel8): ≥ 4.1.6-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-4.1-RHEL-8 (advanced-cluster-security/rhacs-operator-bundle): ≥ 4.1.6-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-4.1-RHEL-8 (advanced-cluster-security/rhacs-scanner-db-rhel8): ≥ 4.1.6-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / RHACS-4.1-RHEL-8 (advanced-cluster-security/rhacs-scanner-db-slim-rhel8): ≥ 4.1.6-6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (postgresql): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (postgresql): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (postgresql:10/postgresql): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (postgresql:16/postgresql): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (postgresql:16/postgresql): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Software Collections (rh-postgresql10-postgresql): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 2.77% as of 2026-11-04; percentile 86.39%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-686

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2023:7545 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7579 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7580 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7581 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7616 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7656 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7666 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7667 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7694 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7695 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7714 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7770 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7772 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7784 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7785 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7883 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7884 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:7885 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:0304 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:0332 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:0337 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2023-5868 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2247168 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/ (CNA: redhat)

- https://www.postgresql.org/support/security/CVE-2023-5868/ (CNA: redhat)

- https://access.redhat.com/errata/RHSA-2023:7545 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7579 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7580 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7581 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7616 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7656 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7666 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7667 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7694 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7695 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7714 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7770 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7772 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7784 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7785 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7883 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7884 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:7885 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2024:0304 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2024:0332 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2024:0337 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/security/cve/CVE-2023-5868 (ADP: CVE; vdb-entry, x_refsource_REDHAT, x_transferred)

- https://bugzilla.redhat.com/show_bug.cgi?id=2247168 (ADP: CVE; issue-tracking, x_refsource_REDHAT, x_transferred)

- https://security.netapp.com/advisory/ntap-20240119-0003/ (ADP: CVE; x_transferred)

- https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/ (ADP: CVE; x_transferred)

- https://www.postgresql.org/support/security/CVE-2023-5868/ (ADP: CVE; x_transferred)

- https://lists.debian.org/debian-lts-announce/2023/11/msg00007.html (ADP: CVE)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-5868; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-5868; retrieved 2026-11-05; source updated Not reported

Revision: 404db61b0c9c15c7ef132526451306a543cb20fa943fd80ed6a807c639d44010

Canonical: https://y2.dev/cve/CVE-2023-5868

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