High severity · published Feb 12, 2026
CVE-2026-2006
Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun
8.8
CVSS
1.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PostgreSQL · PostgreSQL
14.0 before 14.21; 15.0 before 15.16; 16.0 before 16.12; 17.0 before 17.8; 18.0 before 18.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2006
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2006
Vendor Advisory
https://www.postgresql.org/support/security/CVE-2026-2006/
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:19009
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:19010
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:3730
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:3887
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:3896
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