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High severity · published Aug 13, 2026
CVE-2026-14676
PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.
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)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PostgreSQL · PostgreSQL
18 before 18.6 · source: vendor, NVD
Affected product
PO
PostgreSQL
PostgreSQL
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14676
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-14676
Vendor Advisory
https://www.postgresql.org/support/security/CVE-2026-14676/
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