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8.1
CVE-2026-14668: PostgreSQL may let attacker read small memory fragment
CVE-2026-14668 · published 2 months ago
Summary
Versions of PostgreSQL before the latest releases (16.15, 17.11, 18.6, 15.19, and 14.24) can be tricked into exposing a 4‑byte piece of the server's memory when a specially crafted query is run. This could let a malicious user discover internal data, which might aid further attacks. Update PostgreSQL to the mentioned newer versions or apply any vendor‑provided patches as soon as possible.
What to do
- Update alpine postgresql16 to version 16.15-r0.
- Update alpine postgresql17 to version 17.11-r0.
- Update bellsoft postgresql17 to version 17.11-r0.
- Update bellsoft postgresql18 to version 18.6-r0.
- Update debian postgresql-15 to version 15.19-0+deb12u1.
- Update debian postgresql-18 to version 18.6-1.
- Update debian postgresql-13 to version 13.23-0+deb11u4.aikido.7.
- Update debian postgresql-17 to version 17.11-0+deb13u1.
- Update canonical postgresql-14 to version 14.24-0ubuntu0.22.04.1.
- Update canonical postgresql-16 to version 16.15-0ubuntu0.24.04.1.
- Update canonical postgresql-18 to version 18.6-0ubuntu0.26.04.1.
- Update alpine postgresql18 to version 18.5-r0.
- Update postgresql to version 18.5.0.
- Update debian rootio-postgresql-13 to version 13.23-0+deb11u4.aikido.7.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Alpine:v3.22 | alpine | postgresql16 |
< 16.15-r0 Fix: upgrade to 16.15-r0
|
| Alpine:v3.22 | alpine | postgresql17 |
< 17.11-r0 Fix: upgrade to 17.11-r0
|
| Alpaquita:25 | bellsoft | postgresql17 |
>= 17.5-r0, < 17.11-r0 Fix: upgrade to 17.11-r0
|
| Alpaquita:stream | bellsoft | postgresql18 |
>= 18.0-r0, < 18.6-r0 Fix: upgrade to 18.6-r0
|
| Debian:12 | debian | postgresql-15 |
< 15.19-0+deb12u1 Fix: upgrade to 15.19-0+deb12u1
|
| Debian:14 | debian | postgresql-18 |
< 18.6-1 Fix: upgrade to 18.6-1
|
| Alpine:v3.24 | alpine | postgresql17 |
< 17.11-r0 Fix: upgrade to 17.11-r0
|
| Root:Debian:11 | debian | postgresql-13 |
< 13.23-0+deb11u4.aikido.7 Fix: upgrade to 13.23-0+deb11u4.aikido.7
|
| – | – | postgresql | < 18.6 |
| Debian:11 | debian | postgresql-13 | All versions |
| Debian:13 | debian | postgresql-17 |
< 17.11-0+deb13u1 Fix: upgrade to 17.11-0+deb13u1
|
| Ubuntu:Pro:14.04:LTS | canonical | postgresql-9.3 | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | postgresql-9.5 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | postgresql-10 | All versions |
| Ubuntu:20.04:LTS | canonical | postgresql-12 | All versions |
| Ubuntu:22.04:LTS | canonical | postgresql-14 |
< 14.24-0ubuntu0.22.04.1 Fix: upgrade to 14.24-0ubuntu0.22.04.1
|
| Ubuntu:24.04:LTS | canonical | postgresql-16 |
< 16.15-0ubuntu0.24.04.1 Fix: upgrade to 16.15-0ubuntu0.24.04.1
|
| Ubuntu:26.04:LTS | canonical | postgresql-18 |
< 18.6-0ubuntu0.26.04.1 Fix: upgrade to 18.6-0ubuntu0.26.04.1
|
| Alpine:v3.21 | alpine | postgresql16 |
< 16.15-r0 Fix: upgrade to 16.15-r0
|
| Alpine:v3.21 | alpine | postgresql17 |
< 17.11-r0 Fix: upgrade to 17.11-r0
|
| Alpine:v3.23 | alpine | postgresql17 |
< 17.11-r0 Fix: upgrade to 17.11-r0
|
| Alpine:v3.23 | alpine | postgresql18 |
< 18.5-r0 Fix: upgrade to 18.5-r0
|
| Alpine:v3.24 | alpine | postgresql18 |
< 18.5-r0 Fix: upgrade to 18.5-r0
|
| – | postgresql | postgresql |
>= 14.0, < 14.24 >= 15.0, < 15.19 >= 16.0, < 16.15 >= 17.0, < 17.11 >= 18.0, < 18.5 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| Bitnami | – | postgresql |
>= 18.0.0, < 18.5.0 Fix: upgrade to 18.5.0
|
| Root:Debian:11 | debian | rootio-postgresql-13 |
< 13.23-0+deb11u4.aikido.7 Fix: upgrade to 13.23-0+deb11u4.aikido.7
|
Original advisory text
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 ...
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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
References
- https://www.postgresql.org/support/security/CVE-2026-14668/ Vendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2026-14668 Vendor Advisory
- https://security.alpinelinux.org/vuln/CVE-2026-14668 Vendor Advisory
- https://ubuntu.com/security/CVE-2026-14668 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-14668 Third Party Advisory
- https://www.postgresql.org/about/news/postgresql-186-1711-1615-1519-1424-and-19-... Third Party Advisory
- https://ubuntu.com/security/notices/USN-8653-1 Vendor Advisory
- https://docs.bell-sw.com/security/cves/CVE-2026-14668 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-14668 URL
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Type
CWE-843Type Confusion
Timeline
Published13 Aug 2026
Updated4 Nov 2026
First seen13 Aug 2026
Sources
UBUNTU-CVE-2026-14668 · OSV
BELL-CVE-2026-14668 · OSV
DEBIAN-CVE-2026-14668 · OSV
CVE-2026-14668 · NVD
CVE-2026-14668 · MITRE
ALPINE-CVE-2026-14668 · OSV
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