CVE-2026-14668: PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read

Published Aug 13, 2026
·
Updated

Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected Software

5 affected components
PostgreSQL postgresql<18.5
PostgreSQL postgresql<17.11
PostgreSQL postgresql<16.15
PostgreSQL postgresql<15.19
PostgreSQL postgresql<14.24

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade PostgreSQL to a version that resolves this vulnerability.

    Fixed in 18.5
  2. Upgrade

    Upgrade PostgreSQL to a version that resolves this vulnerability.

    Fixed in 17.11
  3. Upgrade

    Upgrade PostgreSQL to a version that resolves this vulnerability.

    Fixed in 16.15
  4. Upgrade

    Upgrade PostgreSQL to a version that resolves this vulnerability.

    Fixed in 15.19
  5. Upgrade

    Upgrade PostgreSQL to a version that resolves this vulnerability.

    Fixed in 14.24

Event History

Aug 13, 2026
CVE Published
via MITRE·01:00 PM
Data Sourced
via MITRE·01:00 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-14668?

The severity of CVE-2026-14668 is classified as high with a CVSS score of 8.1.

2

How do I fix CVE-2026-14668?

To fix CVE-2026-14668, update PostgreSQL to the latest version where the vulnerability has been patched.

3

What type of attack does CVE-2026-14668 involve?

CVE-2026-14668 involves type confusion within the PostgreSQL ctid data type that can lead to unauthorized memory exposure.

4

Who is affected by CVE-2026-14668?

Any PostgreSQL user utilizing the affected versions and employing the ctid data type may be impacted by CVE-2026-14668.

5

What are the potential consequences of CVE-2026-14668?

The consequences of CVE-2026-14668 may include the disclosure of sensitive information from memory, which could be leveraged for further attacks.

Company

Resources

Contact

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CVE-2026-14668 - PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read - SecAlerts