CVE-2026-2006
PostgreSQL missing validation of multibyte character length executes arbitrary code
At a glance
- Severity
- HIGH 8.8
- EPSS
- EPSS 1.16 % · percentile 67 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- PostgreSQL
- NVD status
- Modified
Description
Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | PostgreSQL |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Secondary) |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2026-6186
- GCVE · GCVE-0-2026-2006
CERT-FR advisories
- CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1067 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1056 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0962 — Multiples vulnérabilités dans les produits Tenable · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0933 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0905 — Multiples vulnérabilités dans Tenable Security Center · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0736 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0556 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0483 — Multiples vulnérabilités dans Stormshield Management Center · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0415 — Multiples vulnérabilités dans Tenable Security Center · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0346 — Vulnérabilité dans VMware Tanzu pour Postgres · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0315 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0218 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0199 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0164 — Multiples vulnérabilités dans PostgreSQL · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*≥ 14.0 < 14.21cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*≥ 15.0 < 15.16cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*≥ 16.0 < 16.12cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*≥ 17.0 < 17.8cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*≥ 18.0 < 18.2
Affected products
| Product | Versions |
|---|---|
| PostgreSQL | affected 18 < 18.2 ; affected 17 < 17.8 ; affected 16 < 16.12 ; affected 15 < 15.16 ; affected 0 < 14.21 |
References
- https://www.postgresql.org/support/security/CVE-2026-2006/
- https://access.redhat.com/security/cve/CVE-2026-2006
- https://bugzilla.redhat.com/show_bug.cgi?id=2439324
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2006.json
- https://access.redhat.com/errata/RHSA-2026:4441
- https://access.redhat.com/errata/RHSA-2026:3887
- https://access.redhat.com/errata/RHSA-2026:19010
- https://access.redhat.com/errata/RHSA-2026:19009
- https://access.redhat.com/errata/RHSA-2026:4064
- https://access.redhat.com/errata/RHSA-2026:4024
- https://access.redhat.com/errata/RHSA-2026:4059
- https://access.redhat.com/errata/RHSA-2026:4063
- https://access.redhat.com/errata/RHSA-2026:4506
- https://access.redhat.com/errata/RHSA-2026:4509
- https://access.redhat.com/errata/RHSA-2026:4504
- https://access.redhat.com/errata/RHSA-2026:4505
- https://access.redhat.com/errata/RHSA-2026:4516
- https://access.redhat.com/errata/RHSA-2026:4075
- https://access.redhat.com/errata/RHSA-2026:4074
- https://access.redhat.com/errata/RHSA-2026:4515
- https://access.redhat.com/errata/RHSA-2026:4518
- https://access.redhat.com/errata/RHSA-2026:4254
- https://access.redhat.com/errata/RHSA-2026:4475
- https://access.redhat.com/errata/RHSA-2026:4548
- https://access.redhat.com/errata/RHSA-2026:4544
- https://access.redhat.com/errata/RHSA-2026:4524
- https://access.redhat.com/errata/RHSA-2026:4546
- https://access.redhat.com/errata/RHSA-2026:4547
- https://access.redhat.com/errata/RHSA-2026:4528
- https://access.redhat.com/errata/RHSA-2026:3896
- https://access.redhat.com/errata/RHSA-2026:4110
- https://access.redhat.com/errata/RHSA-2026:3730
- https://access.redhat.com/errata/RHSA-2026:8756
- https://access.redhat.com/errata/RHSA-2026:4943
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |