CVE-2026-2006
PostgreSQL missing validation of multibyte character length executes arbitrary code
8.8
HIGH
CVSS 3.1
EPSS 1.1%
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.
How to fix CVE-2026-2006
To remediate CVE-2026-2006, upgrade the affected package to a fixed version below.
- —upgrade to 14.21.0 or later
Is CVE-2026-2006 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 14.21.0, >= 15.0.0, < 15.16.0, >= 16.0.0, < 16.12.0, >= 17.0.0, < 17.8.0, >= 18.0.0, < 18.2.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |